Contents 1 History 1.1 Collins at Sylvania 1.2 Computer Identics Corporation 1.3 Universal Product Code 2 Industrial adoption 3 Use 4 Symbologies 5 Scanners (barcode readers) 6 Quality control and verification 6.1 Barcode verifier standards 7 Benefits 8 Types of barcodes 8.1 Linear barcodes 8.2 Matrix (2D) barcodes 8.3 Example images 9 In popular culture 10 See also 11 References 12 Further reading 13 External links

History[edit] This article duplicates the scope of other articles, specifically, Universal Product Code#History. Please discuss this issue on the talk page and edit it to conform with Wikipedia's Manual of Style. (December 2013) In 1948 Bernard Silver, a graduate student at Drexel Institute of Technology in Philadelphia, Pennsylvania, US overheard the president of the local food chain, Food Fair, asking one of the deans to research a system to automatically read product information during checkout.[5] Silver told his friend Norman Joseph Woodland about the request, and they started working on a variety of systems. Their first working system used ultraviolet ink, but the ink faded too easily and was expensive.[6][7] Convinced that the system was workable with further development, Woodland left Drexel, moved into his father's apartment in Florida, and continued working on the system. His next inspiration came from Morse code, and he formed his first barcode from sand on the beach. "I just extended the dots and dashes downwards and made narrow lines and wide lines out of them."[6] To read them, he adapted technology from optical soundtracks in movies, using a 500-watt incandescent light bulb shining through the paper onto an RCA935 photomultiplier tube (from a movie projector) on the far side. He later decided that the system would work better if it were printed as a circle instead of a line, allowing it to be scanned in any direction. On 20 October 1949, Woodland and Silver filed a patent application for "Classifying Apparatus and Method", in which they described both the linear and bull's eye printing patterns, as well as the mechanical and electronic systems needed to read the code. The patent was issued on 7 October 1952 as US Patent 2,612,994. In 1951, Woodland moved to IBM and continually tried to interest IBM in developing the system. The company eventually commissioned a report on the idea, which concluded that it was both feasible and interesting, but that processing the resulting information would require equipment that was some time off in the future. IBM offered to buy the patent, but the offer was not accepted. Philco purchased the patent in 1962 and then sold it to RCA sometime later.[6] Collins at Sylvania[edit] During his time as an undergraduate, David Collins worked at the Pennsylvania Railroad and became aware of the need to automatically identify railroad cars. Immediately after receiving his master's degree from MIT in 1959, he started work at GTE Sylvania and began addressing the problem. He developed a system called KarTrak using blue and red reflective stripes attached to the side of the cars, encoding a six-digit company identifier and a four-digit car number.[6] Light reflected off the stripes was fed into one of two photomultipliers, filtered for blue or red.[citation needed] The Boston and Maine Railroad tested the KarTrak system on their gravel cars in 1961. The tests continued until 1967, when the Association of American Railroads (AAR) selected it as a standard, Automatic Car Identification, across the entire North American fleet. The installations began on 10 October 1967. However, the economic downturn and rash of bankruptcies in the industry in the early 1970s greatly slowed the rollout, and it was not until 1974 that 95% of the fleet was labeled. To add to its woes, the system was found to be easily fooled by dirt in certain applications, which greatly affected accuracy. The AAR abandoned the system in the late 1970s, and it was not until the mid-1980s that they introduced a similar system, this time based on radio tags.[8] The railway project had failed, but a toll bridge in New Jersey requested a similar system so that it could quickly scan for cars that had purchased a monthly pass. Then the U.S. Post Office requested a system to track trucks entering and leaving their facilities. These applications required special retroreflector labels. Finally, Kal Kan asked the Sylvania team for a simpler (and cheaper) version which they could put on cases of pet food for inventory control. Computer Identics Corporation[edit] In 1967, with the railway system maturing, Collins went to management looking for funding for a project to develop a black-and-white version of the code for other industries. They declined, saying that the railway project was large enough, and they saw no need to branch out so quickly. Collins then quit Sylvania and formed the Computer Identics Corporation.[6] As its first innovations, Computer Identics moved from using incandescent light bulbs in its systems, replacing them with helium–neon lasers, and incorporated a mirror as well, making it capable of locating a barcode up to several feet in front of the scanner. This made the entire process much simpler and more reliable, and typically enabled these devices to deal with damaged labels, as well, by recognizing and reading the intact portions. Computer Identics Corporation installed one of its first two scanning systems in the spring of 1969 at a General Motors (Buick) factory in Flint, Michigan.[6] The system was used to identify a dozen types of transmissions moving on an overhead conveyor from production to shipping. The other scanning system was installed at General Trading Company's distribution center in Carlstadt, New Jersey to direct shipments to the proper loading bay. Universal Product Code[edit] Main article: Universal Product Code In 1966 the National Association of Food Chains (NAFC) held a meeting on the idea of automated checkout systems. RCA, who had purchased the rights to the original Woodland patent, attended the meeting and initiated an internal project to develop a system based on the bullseye code. The Kroger grocery chain volunteered to test it. In the mid-1970s, the NAFC established the Ad-Hoc Committee for U.S. Supermarkets on a Uniform Grocery-Product Code to set guidelines for barcode development. In addition, it created a symbol-selection subcommittee to help standardize the approach. In cooperation with consulting firm, McKinsey & Co., they developed a standardized 11-digit code for identifying products. The committee then sent out a contract tender to develop a barcode system to print and read the code. The request went to Singer, National Cash Register (NCR), Litton Industries, RCA, Pitney-Bowes, IBM and many others.[9] A wide variety of barcode approaches was studied, including linear codes, RCA's bullseye concentric circle code, starburst patterns and others. In the spring of 1971, RCA demonstrated their bullseye code at another industry meeting. IBM executives at the meeting noticed the crowds at the RCA booth and immediately developed their own system. IBM marketing specialist, Alec Jablonover, remembered that the company still employed Woodland, and he[who?] established a new facility in North Carolina to lead development. In July 1972, RCA began an eighteen-month test in a Kroger store in Cincinnati. Barcodes were printed on small pieces of adhesive paper, and attached by hand by store employees when they were adding price tags. The code proved to have a serious problem; the printers would sometimes smear ink, rendering the code unreadable in most orientations. However, a linear code, like the one being developed by Woodland at IBM, was printed in the direction of the stripes, so extra ink would simply make the code "taller" while remaining readable. So on 3 April 1973, the IBM UPC was selected as the NAFC standard. IBM had designed five versions of UPC symbology for future industry requirements: UPC A, B, C, D, and E.[10] NCR installed a testbed system at Marsh's Supermarket in Troy, Ohio, near the factory that was producing the equipment. On 26 June 1974, Clyde Dawson pulled a 10-pack of Wrigley's Juicy Fruit gum out of his basket and it was scanned by Sharon Buchanan at 8:01 am. The pack of gum and the receipt are now on display in the Smithsonian Institution. It was the first commercial appearance of the UPC.[11] In 1971, an IBM team was assembled for an intensive planning session, thrashing out, 12 to 18 hours a day, how the technology would be deployed and operate cohesively across the system, and scheduling a roll-out plan. By 1973, the team were meeting with grocery manufacturers to introduce the symbol that would need to be printed on the packaging or labels of all of their products. There were no cost savings for a grocery to use it, unless at least 70% of the grocery's products had the barcode printed on the product by the manufacturer. IBM projected that 75% would be needed in 1975. Yet, although this was achieved, there were still scanning machines in fewer than 200 grocery stores by 1977.[12] Economic studies conducted for the grocery industry committee projected over $40 million in savings to the industry from scanning by the mid-1970s. Those numbers were not achieved in that time-frame and some predicted the demise of barcode scanning. The usefulness of the barcode required the adoption of expensive scanners by a critical mass of retailers while manufacturers simultaneously adopted barcode labels. Neither wanted to move first and results were not promising for the first couple of years, with Business Week proclaiming "The Supermarket Scanner That Failed" in a 1976 article.[11][13] On the other hand, experience with barcode scanning in those stores revealed additional benefits. The detailed sales information acquired by the new systems allowed greater responsiveness to customer habits, needs and preferences. This was reflected in the fact that about 5 weeks after installing barcode scanners, sales in grocery stores typically started climbing and eventually leveled off at a 10–12% increase in sales that never dropped off. There was also a 1–2% decrease in operating cost for those stores, and this enabled them to lower prices and thereby to increase market share. It was shown in the field that the return on investment for a barcode scanner was 41.5%. By 1980, 8,000 stores per year were converting.[12] Sims Supermarkets were the first location in Australia to use barcodes, starting in 1979.[14] The global public launch of the barcode[when?] was greeted with minor skepticism from conspiracy theorists, who considered barcodes to be an intrusive surveillance technology, and from some Christians, pioneered by a 1982 book The New Money System 666 by Mary Stewart Relfe, who thought the codes hid the number 666, representing the number of the beast.[15] Television host Phil Donahue described barcodes as a "corporate plot against consumers".[16]

Industrial adoption[edit] In 1981, the United States Department of Defense adopted the use of Code 39 for marking all products sold to the United States military. This system, Logistics Applications of Automated Marking and Reading Symbols (LOGMARS), is still used by DoD and is widely viewed as the catalyst for widespread adoption of barcoding in industrial uses.[17]

Use[edit] Barcodes such as the UPC have become a ubiquitous element of modern civilization, as evidenced by their enthusiastic adoption by stores around the world; most items other than fresh produce from a grocery store now have UPC barcodes.[citation needed] This helps track items and also reduces instances of shoplifting involving price tag swapping, although shoplifters can now print their own barcodes.[18] In addition, retail chain membership cards (issued mostly by grocery stores and specialty "big box" retail stores such as sporting equipment, office supply, or pet stores) use barcodes to uniquely identify consumers, allowing for customized marketing and greater understanding of individual consumer shopping patterns. At the point of sale, shoppers can get product discounts or special marketing offers through the address or e-mail address provided at registration. Example of barcode on a patient identification wristband They are widely used in the healthcare and hospital settings, ranging from patient identification (to access patient data, including medical history, drug allergies, etc.) to creating SOAP Notes[19] with barcodes to medication management. They are also used to facilitate the separation and indexing of documents that have been imaged in batch scanning applications, track the organization of species in biology,[20] and integrate with in-motion checkweighers to identify the item being weighed in a conveyor line for data collection. They can also be used to keep track of objects and people; they are used to keep track of rental cars, airline luggage, nuclear waste, registered mail, express mail and parcels. Barcoded tickets allow the holder to enter sports arenas, cinemas, theatres, fairgrounds, and transportation, and are used to record the arrival and departure of vehicles from rental facilities etc. This can allow proprietors to identify duplicate or fraudulent tickets more easily. Barcodes are widely used in shop floor control applications software where employees can scan work orders and track the time spent on a job. Barcoded parcel Barcodes are also used in some kinds of non-contact 1D and 2D position sensors. A series of barcodes are used in some kinds of absolute 1D linear encoder. The barcodes are packed close enough together that the reader always has one or two barcodes in its field of view. As a kind of fiducial marker, the relative position of the barcode in the field of view of the reader gives incremental precise positioning, in some cases with sub-pixel resolution. The data decoded from the barcode gives the absolute coarse position. An "address carpet", such as Howell's binary pattern and the Anoto dot pattern, is a 2D barcode designed so that a reader, even though only a tiny portion of the complete carpet is in the field of view of the reader, can find its absolute X,Y position and rotation in the carpet.[21][22] Some 2D barcodes embed a hyperlink to a web page. A capable cellphone might be used to read the pattern and browse the linked website, which can help a shopper find the best price for an item in the vicinity. Since 2005, airlines use an IATA-standard 2D barcode on boarding passes (Bar Coded Boarding Pass (BCBP)), and since 2008 2D barcodes sent to mobile phones enable electronic boarding passes.[23] Some applications for barcodes have fallen out of use. In the 1970s and 1980s, software source code was occasionally encoded in a barcode and printed on paper (Cauzin Softstrip and Paperbyte[24] are barcode symbologies specifically designed for this application), and the 1991 Barcode Battler computer game system used any standard barcode to generate combat statistics. In the 21st century, many artists have started using barcodes in art, such as Scott Blake's Barcode Jesus, as part of the post-modernism movement.

Symbologies[edit] The mapping between messages and barcodes is called a symbology. The specification of a symbology includes the encoding of the message into bars and spaces, any required start and stop markers, the size of the quiet zone required to be before and after the barcode, and the computation of a checksum. Linear symbologies can be classified mainly by two properties: Continuous vs. discrete Characters in discrete symbologies are composed of n bars and n − 1 spaces. There is an additional space between characters, but it does not convey information, and may have any width as long as it is not confused with the end of the code. Characters in continuous symbologies are composed of n bars and n spaces, and usually abut, with one character ending with a space and the next beginning with a bar, or vice versa. A special end pattern that has bars on both ends is required to end the code. Two-width vs. many-width A two-width, also called a binary bar code, contains bars and spaces of two widths, "wide" and "narrow". The precise width of the wide bars and spaces is not critical; typically it is permitted to be anywhere between 2 and 3 times the width of the narrow equivalents. Some other symbologies use bars of two different heights (POSTNET), or the presence or absence of bars (CPC Binary Barcode). These are normally also considered binary bar codes. Bars and spaces in many-width symbologies are all multiples of a basic width called the module; most such codes use four widths of 1, 2, 3 and 4 modules. Some symbologies use interleaving. The first character is encoded using black bars of varying width. The second character is then encoded by varying the width of the white spaces between these bars. Thus characters are encoded in pairs over the same section of the barcode. Interleaved 2 of 5 is an example of this. Stacked symbologies repeat a given linear symbology vertically. The most common among the many 2D symbologies are matrix codes, which feature square or dot-shaped modules arranged on a grid pattern. 2D symbologies also come in circular and other patterns and may employ steganography, hiding modules within an image (for example, DataGlyphs). Linear symbologies are optimized for laser scanners, which sweep a light beam across the barcode in a straight line, reading a slice of the barcode light-dark patterns. Scanning at an angle makes the modules appear wider, but does not change the width ratios. Stacked symbologies are also optimized for laser scanning, with the laser making multiple passes across the barcode. In the 1990s development of charge coupled device (CCD) imagers to read barcodes was pioneered by Welch Allyn. Imaging does not require moving parts, as a laser scanner does. In 2007, linear imaging had begun to supplant laser scanning as the preferred scan engine for its performance and durability. 2D symbologies cannot be read by a laser, as there is typically no sweep pattern that can encompass the entire symbol. They must be scanned by an image-based scanner employing a CCD or other digital camera sensor technology.

Scanners (barcode readers)[edit] Main article: Barcode reader The earliest, and still the cheapest, barcode scanners are built from a fixed light and a single photosensor that is manually "scrubbed" across the barcode. Barcode scanners can be classified into three categories based on their connection to the computer. The older type is the RS-232 barcode scanner. This type requires special programming for transferring the input data to the application program. "Keyboard interface scanners" connect to a computer using a PS/2 or AT keyboard–compatible adaptor cable (a "keyboard wedge"). The barcode's data is sent to the computer as if it had been typed on the keyboard. Like the keyboard interface scanner, USB scanners are easy to install and do not need custom code for transferring input data to the application program. On PCs running Windows the HID interface emulates the data merging action of a hardware "keyboard wedge", and the scanner automatically behaves like an additional keyboard. Many phones are able to decode barcodes using their built-in camera, as well. Google's mobile Android operating system uses both their own Google Goggles application or third party barcode scanners like Scan.[25] Nokia's Symbian operating system features a barcode scanner,[26] while mbarcode[27] is a QR code reader for the Maemo operating system. In Apple iOS 11, the native camera app can decode QR codes and can link to URLs, join wireless networks, or perform other operations depending on the QR Code contents.[28] Other paid and free apps are available with scanning capabilities for other symbologies or for earlier iOS versions.[29] With BlackBerry devices, the App World application can natively scan barcodes and load any recognized Web URLs on the device's Web browser. Windows Phone 7.5 is able to scan barcodes through the Bing search app. However, these devices are not designed specifically for the capturing of barcodes. As a result, they do not decode nearly as quickly or accurately as a dedicated barcode scanner or portable data terminal.

Quality control and verification[edit] Barcode verification examines scanability and the quality of the barcode in comparison to industry standards and specifications.[30] Barcode verifiers are primarily used by businesses that print and use barcodes. Any trading partner in the supply chain can test barcode quality. It is important to verify a barcode to ensure that any reader in the supply chain can successfully interpret a barcode with a low error rate. Retailers levy large penalties for non-compliant barcodes. These chargebacks can reduce a manufacturer's revenue by 2% to 10%.[31] A barcode verifier works the way a reader does, but instead of simply decoding a barcode, a verifier performs a series of tests. For linear barcodes these tests are: Edge determination Minimum reflectance Symbol contrast Minimum edge contrast Modulation Defects Decode Decodability 2D matrix symbols look at the parameters: Symbol contrast Modulation Decode Unused error correction Fixed (finder) pattern damage Grid non-uniformity Axial non-uniformity[32] Depending on the parameter, each ANSI test is graded from 0.0 to 4.0 (F to A), or given a pass or fail mark. Each grade is determined by analyzing the scan reflectance profile (SRP), an analog graph of a single scan line across the entire symbol. The lowest of the 8 grades is the scan grade, and the overall ISO symbol grade is the average of the individual scan grades. For most applications a 2.5 (C) is the minimal acceptable symbol grade.[33] Compared with a reader, a verifier measures a barcode's optical characteristics to international and industry standards. The measurement must be repeatable and consistent. Doing so requires constant conditions such as distance, illumination angle, sensor angle and verifier aperture. Based on the verification results, the production process can be adjusted to print higher quality barcodes that will scan down the supply chain. Barcode verifier standards[edit] Barcode verifiers should comply with the ISO/IEC 15426-1 (linear) or ISO/IEC 15426-2 (2D). This standard defines the measuring accuracy of a barcode verifier. The current international barcode quality specification is ISO/IEC 15416 (linear) and ISO/IEC 15415 (2D). The European Standard EN 1635 has been withdrawn and replaced by ISO/IEC 15416. The original U.S. barcode quality specification was ANSI X3.182. (UPCs used in the US – ANSI/UCC5). This standard defines the quality requirements for barcodes and matrix codes (also called optical codes). As of 2011 the ISO workgroup JTC1 SC31 was developing a Direct Part Marking (DPM) quality standard: ISO/IEC TR 29158.[34] International standards are available from the International Organization for Standardization (ISO).[35] These standards are also available from local/national standardization organizations, such as ANSI, BSI, DIN, NEN and others.

Benefits[edit] In point-of-sale management, barcode systems can provide detailed up-to-date information on the business, accelerating decisions and with more confidence. For example: Fast-selling items can be identified quickly and automatically reordered. Slow-selling items can be identified, preventing inventory build-up. The effects of merchandising changes can be monitored, allowing fast-moving, more profitable items to occupy the best space. Historical data can be used to predict seasonal fluctuations very accurately. Items may be repriced on the shelf to reflect both sale prices and price increases. This technology also enables the profiling of individual consumers, typically through a voluntary registration of discount cards. While pitched as a benefit to the consumer, this practice is considered to be potentially dangerous by privacy advocates. Besides sales and inventory tracking, barcodes are very useful in logistics and supply chain management. When a manufacturer packs a box for shipment, a Unique Identifying Number (UID) can be assigned to the box. A database can link the UID to relevant information about the box; such as order number, items packed, quantity packed, destination, etc. The information can be transmitted through a communication system such as Electronic Data Interchange (EDI) so the retailer has the information about a shipment before it arrives. Shipments that are sent to a Distribution Center (DC) are tracked before forwarding. When the shipment reaches its final destination, the UID gets scanned, so the store knows the shipment's source, contents, and cost. Barcode scanners are relatively low cost and extremely accurate compared to key-entry, with only about 1 substitution error in 15,000 to 36 trillion characters entered.[36][unreliable source?] The exact error rate depends on the type of barcode.

Types of barcodes[edit] Linear barcodes[edit] A first generation, "one dimensional" barcode that is made up of lines and spaces of various widths that create specific patterns. Example Symbology Continuous or discrete Bar widths Uses Australia Post barcode Discrete 4 bar heights An Australia Post barcode as used on a business reply paid envelope and applied by automated sorting machines to other mail when initially processed in fluorescent ink . Codabar Discrete Two Old format used in libraries and blood banks and on airbills (out of date) Code 25 – Non-interleaved 2 of 5 Continuous Two Industrial Code 25 – Interleaved 2 of 5 Continuous Two Wholesale, libraries International standard ISO/IEC 16390 Code 11 Discrete Two Telephones (out of date) Farmacode or Code 32 Discrete Two Italian pharmacode – use Code 39 (no international standard available) Code 39 Discrete Two Various – international standard ISO/IEC 16388 Code 49 Continuous Many Various Code 93 Continuous Many Various Code 128 Continuous Many Various – International Standard ISO/IEC 15417 CPC Binary Discrete Two DX film edge barcode Neither Tall/short Color print film EAN 2 Continuous Many Addon code (magazines), GS1-approved – not an own symbology – to be used only with an EAN/UPC according to ISO/IEC 15420 EAN 5 Continuous Many Addon code (books), GS1-approved – not an own symbology – to be used only with an EAN/UPC according to ISO/IEC 15420 EAN-8, EAN-13 Continuous Many Worldwide retail, GS1-approved – International Standard ISO/IEC 15420 Facing Identification Mark Discrete Two USPS business reply mail GS1-128 (formerly named UCC/EAN-128), incorrectly referenced as EAN 128 and UCC 128 Continuous Many Various, GS1-approved – just an application of the Code 128 (ISO/IEC 15417) using the ANS MH10.8.2 AI Datastructures. It is not a separate symbology. GS1 DataBar, formerly Reduced Space Symbology (RSS) Continuous Many Various, GS1-approved Intelligent Mail barcode Discrete 4 bar heights United States Postal Service, replaces both POSTNET and PLANET symbols (formerly named OneCode) ITF-14 Continuous Two Non-retail packaging levels, GS1-approved – is just an Interleaved 2/5 Code (ISO/IEC 16390) with a few additional specifications, according to the GS1 General Specifications JAN Continuous Many Used in Japan, similar and compatible with EAN-13 (ISO/IEC 15420) Japan Post barcode Discrete 4 bar heights Japan Post KarTrak ACI Discrete Coloured bars Used in North America on railroad rolling equipment MSI Continuous Two Used for warehouse shelves and inventory Pharmacode Discrete Two Pharmaceutical packaging (no international standard available) PLANET Continuous Tall/short United States Postal Service (no international standard available) Plessey Continuous Two Catalogs, store shelves, inventory (no international standard available) PostBar Discrete 4 bar heights Canadian Post office POSTNET Discrete Tall/short United States Postal Service (no international standard available) RM4SCC / KIX Discrete 4 bar heights Royal Mail / PostNL RM Mailmark C Discrete 4 bar heights Royal Mail RM Mailmark L Discrete 4 bar heights Royal Mail Telepen Continuous Two Libraries (UK) Universal Product Code (UPC-A and UPC-E) Continuous Many Worldwide retail, GS1-approved – International Standard ISO/IEC 15420 Matrix (2D) barcodes[edit] A matrix code, also termed a 2D barcode or simply a 2D code, is a two-dimensional way to represent information. It is similar to a linear (1-dimensional) barcode, but can represent more data per unit area. Example Name Notes Aztec Code Designed by Andrew Longacre at Welch Allyn (now Honeywell Scanning and Mobility). Public domain. – International Standard: ISO/IEC 24778 Code 1 Public domain. Code 1 is currently used in the health care industry for medicine labels and the recycling industry to encode container content for sorting.[37] ColorCode ColorZip[38] developed colour barcodes that can be read by camera phones from TV screens; mainly used in Korea.[39] Color Construct Code Color Construct Code is one of the few barcode symbologies designed to take advantage of multiple colors.[40][41] CrontoSign CrontoSign (also called photoTAN) is a visual cryptogram[42] containing encrypted order data and a one-time-use TAN.[43] CyberCode From Sony. d-touch readable when printed on deformable gloves and stretched and distorted[44][45] DataGlyphs From Palo Alto Research Center (also termed Xerox PARC).[46] Patented.[47] DataGlyphs can be embedded into a half-tone image or background shading pattern in a way that is almost perceptually invisible, similar to steganography.[48][49] Data Matrix From Microscan Systems, formerly RVSI Acuity CiMatrix/Siemens. Public domain. Increasingly used throughout the United States. Single segment Data Matrix is also termed Semacode. – International Standard: ISO/IEC 16022. Datastrip Code From Datastrip, Inc. Digimarc Barcode The Digimarc Barcode is a unique identifier, or code, based on imperceptible patterns that can be applied to marketing materials, including packaging, displays, ads in magazines, circulars, radio and television[50] DotCode Standardized as AIM Dotcode Rev 3.0. Public Domain. Used to track individual cigarette and pharmaceutical packages. Dot Code A Also known as Philips Dot Code.[51] Patented in 1988.[52] digital paper patterned paper used in conjunction with a digital pen to create handwritten digital documents. The printed dot pattern uniquely identifies the position coordinates on the paper. DWCode Introduced by GS1 US and GS1 Germany, the DWCode is a unique, imperceptible data carrier that is repeated across the entire graphics design of a package[53] EZcode Designed for decoding by cameraphones;[54] from ScanLife.[55] High Capacity Color Barcode Developed by Microsoft; licensed by ISAN-IA. Han Xin Barcode Barcode designed to encode Chinese characters introduced by Association for Automatic Identification and Mobility in 2011. HueCode From Robot Design Associates. Uses greyscale or colour.[56] InterCode From Iconlab, Inc. The standard 2D barcode in South Korea. All 3 South Korean mobile carriers put the scanner program of this code into their handsets to access mobile internet, as a default embedded program. MaxiCode Used by United Parcel Service. Now Public Domain MMCC Designed to disseminate high capacity mobile phone content via existing colour print and electronic media, without the need for network connectivity NexCode NexCode is developed and patented by S5 Systems. Nintendo e-Reader#Dot code Developed by Olympus Corporation to store songs, images, and mini-games for Game Boy Advance on Pokémon trading cards. PDF417 Originated by Symbol Technologies. Public Domain. – International Standard: ISO/IEC 15438 Qode American proprietary and patented 2D barcode from NeoMedia Technologies, Inc.[55] QR code Initially developed, patented and owned by Toyota subsidiary Denso Wave for car parts management; they have chosen not to exercise their patent rights. Can encode Latin and Japanese Kanji and Kana characters, music, images, URLs, emails. De facto standard for Japanese cell phones. Used with BlackBerry Messenger to pick up contacts rather than using a PIN code. The most frequently used type of code to scan with smartphones. Public Domain. – International Standard: ISO/IEC 18004 AR Code A type of marker used for placing content inside augmented reality applications. Some AR Codes can contain QR codes inside, so that content AR content can be linked to.[57] See also ARTag. ShotCode Circular barcodes for camera phones. Originally from High Energy Magic Ltd in name Spotcode. Before that most likely termed TRIPCode. Snapcode, also called Boo-R code used by Snapchat, Spectacles, etc.[58][59][60][61] SPARQCode QR code encoding standard from MSKYNET, Inc. VOICEYE Developed and patented by VOICEYE, Inc. in South Korea, it aims to allow blind and visually impaired people to access printed information. It also claims to be the 2D barcode that has the world's largest storage capacity. Example images[edit] First, Second and Third Generation Barcodes GTIN-12 number encoded in UPC-A barcode symbol. First and last digit are always placed outside the symbol to indicate Quiet Zones that are necessary for barcode scanners to work properly EAN-13 (GTIN-13) number encoded in EAN-13 barcode symbol. First digit is always placed outside the symbol, additionally right quiet zone indicator (>) is used to indicate Quiet Zones that are necessary for barcode scanners to work properly "Wikipedia" encoded in Code 93 "*WIKI39*" encoded in Code 39 'Wikipedia" encoded in Code 128 An example of a stacked barcode. Specifically a "Codablock" barcode. PDF417 sample Lorem ipsum boilerplate text as four segment Data Matrix 2D "This is an example Aztec symbol for Wikipedia" encoded in Aztec Code Text 'EZcode' High Capacity Color Barcode of the URL for Wikipedia's article on High Capacity Color Barcode "Wikipedia, The Free Encyclopedia" in several languages encoded in DataGlyphs Two different 2D barcodes used in film: Dolby Digital between the sprocket holes with the "Double-D" logo in the middle, and Sony Dynamic Digital Sound in the blue area to the left of the sprocket holes The QR Code for the Wikipedia URL. "Quick Response", the most popular 2D barcode in Japan, is promoted by Google. It is open in that the specification is disclosed and the patent is not exercised.[62] MaxiCode example. This encodes the string "Wikipedia, The Free Encyclopedia" ShotCode sample detail of Twibright Optar scan from laser printed paper, carrying 32 kbit/s Ogg Vorbis digital music (48 seconds per A4 page) A KarTrak railroad Automatic Equipment Identification label on a caboose in Florida

In popular culture[edit] In architecture, a building in Lingang New City by German architects Gerkan, Marg and Partners incorporates a barcode design,[63] as does a shopping mall called Shtrikh-kod (the Russian for barcode) in Narodnaya ulitsa ("People's Street") in the Nevskiy district of St. Petersburg, Russia.[64] In media, in 2011, the National Film Board of Canada and ARTE France launched a web documentary entitled, which allows users to view films about everyday objects by scanning the product's barcode with their iPhone camera.[65][66] In professional wrestling, the WWE stable D-Generation X incorporated a barcode into their entrance video, as well as on a T-shirt.[67][68] In the TV series Dark Angel, the protagonist and the other transgenics in the Manticore X-series have barcodes on the back of their necks. In video games, the protagonist of the Hitman video game series has a barcode tattoo on the back of his head. In the films Back to the Future Part II and The Handmaid's Tale, cars in the future are depicted with barcode licence plates. In the Terminator films shows Skynet burns barcodes onto the inside surface of the wrists of captive humans (in a similar location to the WW2 concentration camp tattoos) as a unique identifier. In music, Dave Davies of The Kinks released a solo album in 1980, AFL1-3603, which featured a giant barcode on the front cover in place of the musician's head. The album's name was also the barcode number. The April, 1978 issue of Mad Magazine featured a giant barcode on the cover, with the blurb "[Mad] Hopes this issue jams up every computer in the country...for forcing us to deface our covers with this yecchy UPC symbol from now on!"

See also[edit] Automated identification and data capture (AIDC) Barcode printer Barcode scanner Code (disambiguation) European Article Numbering-Uniform Code Council Global Trade Item Number Identifier Inventory control system ISBN Object hyperlinking Semacode SMS barcode SPARQCode List of GS1 country codes

References[edit] ^ a b Cranstone, Ian. "A guide to ACI (Automatic Car Identification)/KarTrak". CANADIAN FREIGHT CARS A resource page for the Canadian Freight Car Enthusiast. Ian Cranstone. Retrieved 26 May 2013.  ^ Keyes, John (22 August 2003). "KarTrak". John Keyes Boston photoblogger. Images from Boston, New England, and beyond. John Keyes. Retrieved 26 May 2013.  ^ Fox, Margalit (15 June 2011), "Alan Haberman, Who Ushered in the Bar Code, Dies at 81", The New York Times  ^ "Why QR codes are on the rise". The Economist. Retrieved 5 February 2018.  ^ Fishman, Charles (1 August 2001). "The Killer App – Bar None". American Way. Archived from the original on 12 January 2010. Retrieved 2010-04-19.  ^ a b c d e f Seideman, Tony, "Barcodes Sweep the World", Wonders of Modern Technology  ^ Seideman, Tony (Spring 1993). "Barcodes Sweep the World". AccuGraphiX / History of Bar Codes. Archived from the original on 5 November 2016. Retrieved 5 November 2016. Article published in Wonders of Modern Technology, Spring 1993.  ^ Graham-White, Sean (August 1999). "Do You Know Where Your Boxcar Is?". Trains. Kalmbach Publishing. 59 (8): 48–53.  ^ George Laurer, "Development of the U.P.C. Symbol" Archived 25 September 2008 at the Wayback Machine., ^ Nelson, Benjamin (1997). "From Punched Cards To Bar Codes".  ^ a b Varchaver, Nicholas (31 May 2004). "Scanning the Globe". Fortune. Archived from the original on 14 November 2006. Retrieved 2006-11-27.  ^ a b Selmeier, Bill (2008). Spreading the Barcode. pp. 26, 214, 236, 238, 244, 245, 236, 238, 244, 245. ISBN 978-0-578-02417-2.  ^ Rawsthorn, Alice (23 Feb 2010). "Scan Artists". Retrieved 31 Jul 2015.  ^ "World hails barcode on important birthday". ATN. Retrieved 4 July 2014.  ^ "What about barcodes and 666: The Mark of the Beast?". 1999. Retrieved 2014-03-14.  ^ Bishop, Tricia (5 July 2004). "UPC bar code has been in use 30 years". Archived from the original on 23 August 2004. Retrieved 22 December 2009.  ^ "". Retrieved 2011-11-28.  ^ "Retrieved November 17, 2011". 2 May 2011. Retrieved 2011-11-28.  ^ Oberfield, Craig. "QNotes Barcode System". US Patented #5296688. Quick Notes Inc. Retrieved 15 December 2012.  ^ National Geographic, May 2010, page 30 ^ David L. Hecht. "Printed Embedded Data Graphical User Interfaces" Archived 3 June 2013 at the Wayback Machine.. Xerox Palo Alto Research Center. IEEE Computer March 2001. ^ Jon Howell and Keith Kotay. "Landmarks for absolute localization". Dartmouth Computer Science Technical Report TR2000-364, March 2000. ^ "". 21 November 2011. Retrieved 2011-11-28.  ^ "Paperbyte Bar Codes for Waduzitdo" Byte magazine, 1978 September p. 172 ^ "Scan". [permanent dead link] ^ "Nokia Europe – Nokia N80 – Support".  ^ "package overview for mbarcode". Retrieved 28 July 2010.  ^ Mikah Sargent (2017-09-24). "How to use QR codes in iOS 11". iMore. Retrieved 2017-10-01.  ^ "Best Barcode iPhone Applications - Barcode Scanners for iOS". Retrieved 2017-10-01.  ^ "Layman's Guide to ANSI, CEN, and ISO Barcode Print Quality Documents" (PDF). Association for Automatic Identification and Data Capture Technologies (AIM). 2002. Retrieved 23 November 2017.  ^ Zieger, Anne (October 2003). "Retailer chargebacks: is there an upside? Retailer compliance initiatives can lead to efficiency". Frontline Solutions. Archived from the original on 2012-07-08. Retrieved 2 August 2011.  ^ Bar Code Verification Best Practice work team (May 2010). "GS1 DataMatrix: An introduction and technical overview of the most advanced GS1 Application Identifiers compliant symbology" (PDF). Global Standards 1. 1.17: 34–36. Archived (PDF) from the original on 20 July 2011. Retrieved 2 August 2011.  ^ GS1 Bar Code Verification Best Practice work team (May 2009). "GS1 Bar Code Verification for Linear Symbols" (PDF). Global Standards 1 (4.3): 23–32. Retrieved 2 August 2011.  ^ "Technical committees – JTC 1/SC 31 – Automatic identification and data capture techniques". ISO. Retrieved 2011-11-28.  ^ "ISO web site". Retrieved 2011-11-28.  ^ Harmon and Adams(1989). Reading Between The Lines, p.13. Helmers Publishing, Inc, Peterborough, New Hampshire, USA. ISBN 0-911261-00-1. ^ Adams, Russ (15 June 2009). "2-Dimensional Bar Code Page". Archived from the original on 7 July 2011. Retrieved 2011-06-06.  ^ "". Retrieved 2011-11-28.  ^ "Barcodes for TV Commercials". Adverlab. 31 January 2006. Retrieved 2009-06-10.  ^ "About". Colour Code Technologies. Archived from the original on 29 August 2012. Retrieved 2012-11-04.  ^ "Frequently Asked Questions". ColorCCode. Archived from the original on 2013-02-21. Retrieved 2012-11-04.  ^ CrontoSign Image, Cronto . ^ Neu bei comdirect: photoTAN [New at comdirect: photoTAN] (in German), Comdirect Bank Aktiengesellschaft, 9 April 2013 . ^ d-touch topological fiducial recognition, MIT, archived from the original on 2 March 2008 . ^ d-touch markers are applied to deformable gloves, MIT, archived from the original on 21 June 2008 . ^ See for details. ^ "DataGlyphs: Embedding Digital Data". Microglyphs. 2006-05-03. Retrieved 2014-03-10.  ^ ""DataGlyph" Embedded Digital Data". Tauzero. Retrieved 2014-03-10.  ^ "DataGlyphs". Xerox. Retrieved 2014-03-10.  ^ "Better Barcodes, Better Business" (PDF).  ^ Dot Code A at ^ Dot Code A Patent ^ "GS1 Germany and Digimarc Announce Collaboration to Bring DWCode to the German Market".  ^ "Scanbuy". Retrieved 2011-11-28.  ^ a b Steeman, Jeroen. "Online QR Code Decoder". Retrieved 9 January 2014.  ^ "BarCode-1 2-Dimensional Bar Code Page". Adams. Archived from the original on 3 November 2008. Retrieved 2009-06-10.  ^ "AR Code Generator" ^ ^ "Snapchat is changing the way you watch snaps and add friends" ^ "Snapchat Lets You Add People Via QR Snaptags Thanks To Secret Acquisition" ^ "How Snapchat Made QR Codes Cool Again" ^ (株)デンソーウェーブ, (in Japanese) Copyright ^ Barcode Halls – gmp Archived 18 October 2011 at the Wayback Machine. ^ "image". Retrieved 2011-11-28.  ^ Lavigne, Anne-Marie. "Introducing, a new interactive doc about the objects that surround us". NFB Blog. National Film Board of Canada. Retrieved 7 October 2011.  ^ Anderson, Kelly (6 October 2011). "NFB, ARTE France launch 'Bar Code'". Reelscreen. Retrieved 7 October 2011.  ^ [1] Archived 16 March 2015 at the Wayback Machine. ^ "Dx theme song 2009-2010". YouTube. 2009-12-19. Retrieved 2014-03-10. 

Further reading[edit] Automating Management Information Systems: Barcode Engineering and Implementation – Harry E. Burke, Thomson Learning, ISBN 0-442-20712-3 Automating Management Information Systems: Principles of Barcode Applications – Harry E. Burke, Thomson Learning, ISBN 0-442-20667-4 The Bar Code Book – Roger C. Palmer, Helmers Publishing, ISBN 0-911261-09-5, 386 pages The Bar Code Manual – Eugene F. Brighan, Thompson Learning, ISBN 0-03-016173-8 Handbook of Bar Coding Systems – Harry E. Burke, Van Nostrand Reinhold Company, ISBN 978-0-442-21430-2, 219 pages Information Technology for Retail:Automatic Identification & Data Capture Systems – Girdhar Joshi, Oxford University Press, ISBN 0-19-569796-0, 416 pages Lines of Communication – Craig K. Harmon, Helmers Publishing, ISBN 0-911261-07-9, 425 pages Punched Cards to Bar Codes – Benjamin Nelson, Helmers Publishing, ISBN 0-911261-12-5, 434 pages Revolution at the Checkout Counter: The Explosion of the Bar Code – Stephen A. Brown, Harvard University Press, ISBN 0-674-76720-9 Reading Between The Lines – Craig K. Harmon and Russ Adams, Helmers Publishing, ISBN 0-911261-00-1, 297 pages The Black and White Solution: Bar Code and the IBM PC – Russ Adams and Joyce Lane, Helmers Publishing, ISBN 0-911261-01-X, 169 pages Sourcebook of Automatic Identification and Data Collection – Russ Adams, Van Nostrand Reinhold, ISBN 0-442-31850-2, 298 pages Inside Out: The Wonders of Modern Technology - Carol J. Amato, Smithmark Pub, ISBN 0831746572, 1993

External links[edit] Wikimedia Commons has media related to Barcode. Barcode at Curlie (based on DMOZ) Barcode Glossary of Terms 99% Invisible - Barcodes (some images of bulls-eye barcodes) v t e Paper data storage media Antiquity Writing on papyrus (c. 3000 BCE) Paper (105 CE) Modern Railroad/Transit Punch Photograph (1880s) Punched card (1890) Edge-notched card (1896) Optical mark recognition Optical character recognition (1929) Barcode (1948) Authority control LCCN: sh93000312 GND: 4121737-8 NDL: 00575415 v t e Barcodes Linear barcodes Automatic Car Identification Code 11 Code 39 Code 93 Code 128 Codabar European Article Number GS1 DataBar ITF-14 Interleaved 2 of 5 MSI Barcode Patch Code Pharmacode Plessey Telepen UPC UPC-A MaxiCode Post office barcodes CPC Binary Barcode Facing Identification Mark PostBar POSTNET RM4SCC Intelligent Mail barcode PLANET 2D barcodes (stacked) GS1 DataBar PDF417 2D barcodes (matrix) Aztec Code Data Matrix (Semacode) MaxiCode QR code Polar coordinate barcodes MaxiCode ShotCode Other High Capacity Color Barcode (Microsoft Tag) Technological issues Barcode reader Barcode printer Other data tags RFID Bokode Related topics Supply Chain Management Object hyperlinking Matrix Mobile tagging CueCat Retrieved from "" Categories: BarcodesEncodingsAutomatic identification and data capture1952 introductionsAmerican inventionsRecords management technologyHidden categories: Webarchive template wayback linksAll articles with dead external linksArticles with dead external links from July 2017Articles with permanently dead external linksCS1 German-language sources (de)Articles with Japanese-language external linksUse dmy dates from April 2013Duplicate articlesAll articles with unsourced statementsArticles with unsourced statements from October 2009All articles with specifically marked weasel-worded phrasesArticles with specifically marked weasel-worded phrases from February 2016All articles with vague or ambiguous timeVague or ambiguous time from June 2014Articles with unsourced statements from June 2010All articles lacking reliable referencesArticles lacking reliable references from July 2010Articles with Curlie linksWikipedia articles with LCCN identifiersWikipedia articles with GND identifiers

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CodeInterleaved 2 Of 5Code 11Farmacode (page Does Not Exist)Code 39Code 39Code 49Code 93Code 128CPC Binary BarcodeDX EncodingColor Print FilmEAN 2GS1EAN 5GS1EAN-8EAN-13GS1Facing Identification MarkGS1-128EAN 128UCC 128GS1GS1 DataBarGS1Intelligent Mail BarcodeOneCodeITF-14GS1Japan Article NumberEAN-13Japan PostKarTrakMSI BarcodePharmacodePostal Alpha Numeric Encoding TechniquePlessey CodePostBarPOSTNETRM4SCCPostNLTelepenUniversal Product CodeGS1Aztec CodePhotoTANCyberCodeSteganographyData MatrixSemacodeDatastrip CodeDigimarcDotCode (page Does Not Exist)Digital PaperDigital PenExample Of An EZcode.High Capacity Color BarcodeMicrosoftInternational Standard Audiovisual Number International AgencyHan Xin Barcode (page Does Not Exist)Chinese CharactersAssociation For Automatic Identification And MobilityMaxiCodeUnited Parcel ServiceMobile Multi-Coloured CompositeLevels Of Identity SecurityNintendo E-ReaderOlympus CorporationGame Boy AdvancePDF417Symbol TechnologiesQode Example.QodeQR CodeToyotaPatent RightLatin ScriptBlackBerry MessengerARToolKitAugmented RealityARTagShotCodeCamera PhoneSnapchatSpectacles (product)SPARQCodeCode 93Code 39Code 128PDF417Lorem IpsumData MatrixAztec CodeHigh Capacity Color BarcodeDataGlyph (page Does Not Exist)Dolby DigitalSony Dynamic Digital SoundQR CodeMaxiCodeShotCodeTwibright Optar (page Does Not Exist)KarTrakAutomatic Equipment IdentificationLingang New CityGerkan, Marg And PartnersAdministrative Divisions Of Saint PetersburgSt. PetersburgNational Film Board Of CanadaARTE FranceIPhoneProfessional WrestlingWWED-Generation XDark Angel (TV Series)TransgenicsHitman (video Game Series)Back To The Future Part IIThe Handmaid's Tale (film)Licence PlateDave DaviesThe KinksMad MagazineAutomated Identification And Data CaptureBarcode PrinterBarcode ScannerCode (disambiguation)European Article Numbering-Uniform Code CouncilGlobal Trade Item NumberIdentifierInventory Control SystemISBNObject HyperlinkingSemacodeSMS BarcodeSPARQCodeList Of GS1 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NumberSpecial:BookSources/0-911261-00-1International Standard Book NumberSpecial:BookSources/0-911261-01-XInternational Standard Book NumberSpecial:BookSources/0-442-31850-2International Standard Book NumberSpecial:BookSources/0831746572DMOZTemplate:Paper Data Storage MediaTemplate Talk:Paper Data Storage MediaPaper Data StorageWritingPapyrusPaperPunched CardEdge-notched CardOptical Mark RecognitionOptical Character RecognitionHelp:Authority ControlLibrary Of Congress Control NumberIntegrated Authority FileNational Diet LibraryTemplate:BarcodesTemplate Talk:BarcodesKarTrakCode 11Code 39Code 93Code 128CodabarInternational Article Number (EAN)GS1 DataBarITF-14Interleaved 2 Of 5MSI BarcodePatch CodePharmacodePlessey CodeTelepenUniversal Product CodeUniversal Product CodeMaxiCodeMailCPC Binary BarcodeFacing Identification MarkPostBarPOSTNETRM4SCCIntelligent Mail BarcodePostal Alpha Numeric Encoding TechniqueGS1 DataBarPDF417Matrix (mathematics)Aztec CodeData MatrixSemacodeMaxiCodeQR 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