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72-458: PLHKS provides courses in six levels, as seen in many other secondary schools in Hong Kong. They start from the lowest level, Secondary 1 (S.1) to Secondary 6 (S.6). There are 4 classes in junior secondary, S.1, S.2 & S.3, while class A in all 3 levels Ii considered to be 'elite' class. Oh, let yonder hills of Shatin resound, With joy, the song to Thee our hearts are bound, Lively and young,

144-484: A 1976 article. Sims Supermarkets were the first location in Australia to use barcodes, starting in 1979. A barcode system is a network of hardware and software, consisting primarily of mobile computers , printers , handheld scanners , infrastructure, and supporting software. Barcode systems are used to automate data collection where hand recording is neither timely nor cost effective. Despite often being provided by

216-424: 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

288-437: A few different forms. Matrix codes can also be read by a digital camera connected to a microcomputer running software that takes a photographic image of the barcode and analyzes the image to deconstruct and decode the code. A mobile device with a built-in camera, such as a smartphone , can function as the latter type of barcode reader using specialized application software and is suitable for both 1D and 2D codes. The barcode

360-409: 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

432-503: A grocery store. This speeds up processing at check-outs and helps track items and also reduces instances of shoplifting involving price tag swapping, although shoplifters can now print their own barcodes. Barcodes that encode a book's ISBN are also widely pre-printed on books, journals and other printed materials. In addition, retail chain membership cards use barcodes to identify customers, allowing for customized marketing and greater understanding of individual consumer shopping patterns. At

504-419: A handheld supplement to bulkier laptops . During the same period, the mobile phone evolved from supporting voice communication only to accommodating text messaging , Internet connectivity, multimedia, and videotelephony . These feature phones eventually gave way to the modern smartphone , which combined all the aforementioned devices, and more, into one device. Since the late 2000s, smartphones have been

576-434: 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. The earliest, and still the cheapest, barcode scanners are built from a fixed light and a single photosensor that is manually moved across the barcode. Barcode scanners can be classified into three categories based on their connection to

648-578: 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. NCR installed a testbed system at Marsh's Supermarket in Troy, Ohio , near

720-508: A mirror as well, making it capable of locating a barcode up to a meter (3 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. The system

792-638: A mobile host, e.g., a smartphone can be carried in a bag or pocket but can easily be misplaced. Hence, mobile hosts with embedded devices such as an autonomous vehicle can appear larger than pocket-sized. The most common size of a mobile computing device is pocket-sized, but other sizes for mobile devices exist. Mark Weiser , known as the father of ubiquitous computing , referred to device sizes that are tab-sized, pad, and board sized, where tabs are defined as accompanied or wearable centimeter-sized devices, e.g. smartphones , phablets and tablets are defined as hand-held decimeter-sized devices. If one changes

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864-522: A monthly pass. Then the US 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. In 1967, with the railway system maturing, Collins went to management looking for funding for

936-530: A new facility in Research Triangle Park to lead development. In July 1972 RCA began an 18-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,

1008-502: 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 . As its first innovations, Computer Identics moved from using incandescent light bulbs in its systems, replacing them with helium–neon lasers , and incorporated

1080-652: A student in the school. Students can be awarded or punished by the school for their behavior within the school and outside the school. Students are to be awarded usually because they served themselves as class monitor, subject leader or other means of servicing. Students are also awarded for prizes gained in inter-school competitions. The award systems are classified into several categories. The minimum honour [Praise > Mini Merit > Minor Merit > Major Merit] The maximum honour A merit will be given to students who discovered possessions of which does not belong to them and hand them out. The level of award given depends on

1152-448: A task for which they have become almost universal. The Uniform Grocery Product Code Council had chosen, in 1973, the barcode design developed by George Laurer . Laurer's barcode, with vertical bars, printed better than the circular barcode developed by Woodland and Silver. Their use has spread to many other tasks that are generically referred to as automatic identification and data capture (AIDC). The first successful system using barcodes

1224-442: A web page. A mobile device with a built-in camera 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. Some applications for barcodes have fallen out of use. In

1296-612: Is a method of representing data in a visual, machine-readable form . Initially, barcodes represented data by varying the widths, spacings and sizes of parallel lines. These barcodes, now commonly referred to as linear or one-dimensional (1D), can be scanned by special optical scanners , called barcode readers , of which there are several types. Later, two-dimensional (2D) variants were developed, using rectangles, dots, hexagons and other patterns, called 2D barcodes or matrix codes , although they do not use bars as such. Both can be read using purpose-built 2D optical scanners, which exist in

1368-425: Is common for producers and users of bar codes to have a quality management system which includes verification and validation of bar codes. Barcode verification examines scanability and the quality of the barcode in comparison to industry standards and specifications. Barcode verifiers are primarily used by businesses that print and use barcodes. Any trading partner in the supply chain can test barcode quality. It

1440-450: 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

1512-483: Is free of charge at its first issuance. Subsequent issuance of the card is charged at at least HKD$ 35 with a progressive penalty applied which varies every school year. New students are to receive basic information including the school rules in their first week in PLHKS. The discipline department mistress speaks to all new secondary one students in an induction programme about the rules they have to obey throughout their life as

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1584-462: 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%. 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: 2D matrix symbols look at

1656-410: Is located at the end of each corridor next to the rear staircase. Each student and staff are given an identification card ( student card/ staff card ) which has a contactless technology. The card is used as morning (and sometimes afternoon) attendance taking and is used to activate the library copier. The issue desk in the library scanned the traditional barcode on the card for book clearance. The card

1728-461: Is often regarded as synonymous with having wireless connectivity, these terms are different. Not all network access by mobile users, applications, and devices needs to be via wireless networks and vice versa. Wireless access devices can be static and mobile users can move between wired and wireless hotspots such as in Internet cafés. Some mobile devices can be used as mobile Internet devices to access

1800-454: 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

1872-461: The post-modernism movement. 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: Some symbologies use interleaving. The first character

1944-454: The 1970s and 1980s, software source code was occasionally encoded in a barcode and printed on paper ( Cauzin Softstrip and Paperbyte are barcode symbologies specifically designed for this application), and the 1991 Barcode Battler computer game system used any standard barcode to generate combat statistics. Artists have used barcodes in art, such as Scott Blake 's Barcode Jesus, as part of

2016-551: The 2000s due to the growth in smartphone ownership. Other systems have made inroads in the AIDC market, but the simplicity, universality and low cost of barcodes has limited the role of these other systems, particularly before technologies such as radio-frequency identification (RFID) became available after 2023. In 1948, Bernard Silver , a graduate student at Drexel Institute of Technology in Philadelphia, Pennsylvania, US overheard

2088-441: The 21st-century, mobile phone providers began making television available on cellular phones. In the 2010s, mobile devices were observed to frequently include the ability to sync and share a variety of data despite the distance or specifications of the devices. In the medical field, mobile devices are quickly becoming essential tools for accessing clinical information such as drugs, treatment, and even medical calculations. Due to

2160-502: 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 . It

2232-553: The Internet while moving, but they do not need to do this and many phone functions or applications are still operational even while disconnected from the Internet . What makes the mobile device unique compared to other technologies is the inherent flexibility in the hardware and software. Flexible applications include video chat, web browsing, payment systems, near field communication, audio recording etc. As mobile devices become ubiquitous, there will be an increase of services which include

Pentecostal Lam Hon Kwong School - Misplaced Pages Continue

2304-541: The Truth we found. Friends loving, caring and sharing. Pentecost, we learn the Way. Pentecost, we live each day. One Faith, one Hope, one Love; O Lord, bless our school today. PLHKS provides wireless internet connection (WiFi) for academic staff. Current students can gain access to the internet by using one of the on-site workstations in the premises. A lift can be accessed by physically-challenged students, staff and visitors. It

2376-549: The application program. On PCs running Windows the human interface device emulates the data merging action of a hardware "keyboard wedge", and the scanner automatically behaves like an additional keyboard. Most modern smartphones are able to decode barcode using their built-in camera. Google's mobile Android operating system can use their own Google Lens application to scan QR codes, or third-party apps like Barcode Scanner to read both one-dimensional barcodes and QR codes. Google's Pixel devices can natively read QR codes inside

2448-409: 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. A wide variety of barcode approaches

2520-446: The barcode gives the absolute coarse position. An "address carpet", used in digital paper , 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. Matrix codes can embed a hyperlink to

2592-410: The best known brand of handheld scanners and mobile computers being produced by Symbol , a division of Motorola . Some ERP, MRP, and other inventory management software have built in support for barcode reading. Alternatively, custom interfaces can be created using a language such as C++ , C# , Java , Visual Basic.NET , and many others. In addition, software development kits are produced to aid

2664-458: The colored stripes encoding information such as ownership, type of equipment, and identification number. The plates were read by a trackside scanner located, for instance, at the entrance to a classification yard, while the car was moving past. The project was abandoned after about ten years because the system proved unreliable after long-term use. Barcodes became commercially successful when they were used to automate supermarket checkout systems,

2736-532: 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 do not need custom code for transferring input data to

2808-495: The context of several qualities: Strictly speaking, many so-called mobile devices are not mobile. It is the host that is mobile, i.e., a mobile human host carries a non-mobile smartphone device. An example of a true mobile computing device, where the device itself is mobile, is a robot . Another example is an autonomous vehicle . There are three basic ways mobile devices can be physically bound to mobile hosts: Accompanied refers to an object being loosely bound and accompanying

2880-451: The customer on their home printer, or stored on their mobile device) 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

2952-578: The default Pixel Camera app. Nokia's Symbian operating system featured a barcode scanner, while mbarcode 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. Other paid and free apps are available with scanning capabilities for other symbologies or for earlier iOS versions. With BlackBerry devices,

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3024-502: The factory that was producing the equipment. On 26 June 1974, a 10-pack of Wrigley's Juicy Fruit gum was scanned, registering the first commercial use of the UPC. In 1971 an IBM team was assembled for an intensive planning session, threshing 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

3096-597: The form of the mobile devices in terms of being non-planar, one can also have skin devices and tiny dust-sized devices. Dust refers to miniaturized devices without direct HCI interfaces, e.g., micro-electromechanical systems ( MEMS ), ranging from nanometers through micrometers to millimeters. See also Smart dust . Skin : fabrics based upon light emitting and conductive polymers and organic computer devices. These can be formed into more flexible non-planar display surfaces and products such as clothes and curtains, see OLED display . Also, see smart device . Although mobility

3168-476: 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

3240-419: 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

3312-429: The mobile device has been marked by increasing technological convergence . Early mobile devices—such as pocket calculators , portable media players , satellite navigation devices , and digital cameras —excelled at their intended use but were not multifaceted. Personal digital assistants (PDAs) proliferated in the 1990s as a way to quickly write down notes, schedule business appointments, and set personal reminders, as

3384-783: The most common mobile device in the world, in terms of quantity sold, owing to their great convergence of technologies. By the early 2010s, mobile devices began integrating sensors such as accelerometers , magnetometers , and gyroscopes , allowing the detection of orientation and motion. Mobile devices may provide biometric user authentication, such as face recognition or fingerprint recognition. Handheld devices such as enterprise digital assistants have become more rugged for use in mobile field management . This involves tasks such as digitizing notes, sending and receiving invoices , asset management , recording signatures, managing parts, and scanning barcodes and RFID tags. In 2009, developments in mobile collaboration systems enabled

3456-586: The parameters: Mobile device A mobile device or handheld device is a computer small enough to hold and operate in hand. Mobile devices are typically battery-powered and possess a flat-panel display and one or more built-in input devices , such as a touchscreen or keypad . Modern mobile devices often emphasize wireless networking , to both the Internet and to other devices in their vicinity, such as headsets or in-car entertainment systems, via Wi-Fi , Bluetooth , cellular networks , or near-field communication . Device mobility can be viewed in

3528-420: The point of sale, shoppers can get product discounts or special marketing offers through the address or e-mail address provided at registration. Barcodes are widely used in healthcare and hospital settings , ranging from patient identification (to access patient data, including medical history, drug allergies, etc.) to creating SOAP notes with barcodes to medication management. They are also used to facilitate

3600-534: The popularity of mobile gaming , the gambling industry started offering casino games on mobile devices, which led to the inclusion of these devices in the anti-hazard legislature as devices that could potentially be used for illegal gambling. Additional potentially unlawful actions could encompass the utilization of mobile devices in disseminating explicit material involving minors. Moreover, the legitimate adult entertainment sector's incorporation of mobile apps and technology to advance its operations raises concerns. There

3672-401: 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. 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. Convinced that the system

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3744-462: The problem. He developed a system called KarTrak using blue, white and red reflective stripes attached to the side of the cars, encoding a four-digit company identifier and a six-digit car number. Light reflected off the colored stripes was read by photomultiplier vacuum tubes. The Boston and Maine Railroad tested the KarTrak system on their gravel cars in 1961. The tests continued until 1967, when

3816-626: The process. 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. Barcodes are widely used around the world in many contexts. In stores, UPC barcodes are pre-printed on most items other than fresh produce from

3888-590: 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. During his time as an undergraduate, David Jarrett 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

3960-492: 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

4032-411: The same company, Barcoding systems are not radio-frequency identification (RFID) systems. Many companies use both technologies as part of larger resource management systems. A typical barcode system consist of some infrastructure, either wired or wireless that connects some number of mobile computers, handheld scanners, and printers to one or many databases that store and analyze the data collected by

4104-467: The separation and indexing of documents that have been imaged in batch scanning applications, track the organization of species in biology, 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, express mail, and parcels. Barcoded tickets (which may be printed by

4176-409: 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. Economic studies conducted for the grocery industry committee projected over $ 40 million in savings to

4248-468: The system. At some level there must be some software to manage the system. The software may be as simple as code that manages the connection between the hardware and the database or as complex as an ERP , MRP , or some other inventory management software. A wide range of hardware is manufactured for use in barcode systems by such manufacturers as Datalogic, Intermec, HHP (Hand Held Products), Microscan Systems , Unitech, Metrologic, PSC, and PANMOBIL, with

4320-508: The time spent on a job. 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

4392-480: The use of handheld devices that combine video, audio, and on-screen drawing capabilities to enable multi-party conferencing in real-time, independent of location. Handheld computers are available in a variety of form factors, including smartphones , handheld PDAs , ultra-mobile PCs and tablet computers ( Palm OS , WebOS ). Users can watch television through the Internet by IPTV on some mobile devices. Mobile television receivers have existed since 1960, and, in

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4464-518: The use of the cloud . Although a common form of mobile device, a smartphone, has a display, another perhaps even more common form of smart computing device, the smart card , e.g., used as a bank card or travel card, does not have a display. This mobile device often has a CPU and memory but needs to connect or be inserted into a reader to display its internal data or state. There are many kinds of mobile devices, designed for different applications. They include, but are not limited to: The history of

4536-578: The value of the item found. On the other hand, punishments are to be given to students who break the school rules deliberately. Usually students are given demerits for their frequent lateness and frequent failure to produce work on time. The punishment systems are classified into several categories. The items below has been ranked in severity. The minimum punishment [Warning < Mini Demerit < Minor Demerit < Major Demerit] The maximum punishment Detention system Students who fail to hand in homework are sent to detention. They are expected to complete

4608-476: 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

4680-610: The work which they missed during their detention. There are several departments managing the school. Department members are current teaching staff who also perform teaching duties. Chaired by the deputy headmaster, the department endorses teaching plans across all curriculum proposed by various panels. Chaired by the discipline teacher with a few teachers on hold. Their objective is to teach students about their in-school behavior. 22°23′04″N 114°12′08″E  /  22.384321°N 114.202291°E  / 22.384321; 114.202291 Barcode A barcode or bar code

4752-453: 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. 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

4824-514: Was in the UK supermarket group Sainsbury's in 1972 using shelf-mounted barcodes which were developed by Plessey . In June 1974, Marsh supermarket in Troy, Ohio used a scanner made by Photographic Sciences Corporation to scan the Universal Product Code (UPC) barcode on a pack of Wrigley's chewing gum. QR codes , a specific type of 2D barcode, rose in popularity in the second decade of

4896-613: Was invented by Norman Joseph Woodland and Bernard Silver and patented in the US in 1952. The invention was based on Morse code that was extended to thin and thick bars. However, it took over twenty years before this invention became commercially successful. UK magazine Modern Railways December 1962 pages 387–389 record how British Railways had already perfected a barcode-reading system capable of correctly reading rolling stock travelling at 100 mph (160 km/h) with no mistakes. An early use of one type of barcode in an industrial context

4968-403: Was sponsored by the Association of American Railroads in the late 1960s. Developed by General Telephone and Electronics (GTE) and called KarTrak ACI (Automatic Car Identification), this scheme involved placing colored stripes in various combinations on steel plates which were affixed to the sides of railroad rolling stock. Two plates were used per car, one on each side, with the arrangement of

5040-467: 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 established

5112-530: 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. In 1966 the National Association of Food Chains (NAFC) held a meeting on the idea of automated checkout systems. RCA , which had purchased

5184-469: 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." To read them, he adapted technology from optical soundtracks in movies, using

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