bar code

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bar code

Commerce a machine-readable arrangement of numbers and parallel lines of different widths printed on a package, which can be electronically scanned at a checkout to register the price of the goods and to activate computer stock-checking and reordering

bar code

[′bär ‚kōd]
(computer science)
The representation of alphanumeric characters by series of adjacent stripes of various widths, for example, the universal product code.

bar code

(convention)
A printed horizontal strip of vertical bars of varying widths, groups of which represent decimal digits and are used for identifying commercial products or parts. Bar codes are read by a bar code reader and the code interpreted either through software or a hardware decoder.

All products sold in open trade are numbered and bar-coded to a worldwide standard, which was introduced in the US in 1973 and to the rest of the world in 1977. The Uniform Code Council in the US, along with the international article numbering authority, EAN International, allocate blocks of unique 12 or 13-digit numbers to member companies through a national numbering authority. In Britain this is the Article Number Association. Most companies are allocated 100,000 numbers that they can use to identify any of their products, services or locations.

Each code typically contains a leading "quiet" zone, start character, data character, optional check digit, stop character and a trailing quiet zone. The check digit is used to verify that the number has been scanned correctly. The quiet zone could be white, red or yellow if viewed by a red scanner. Bar code readers usually use visible red light with a wavelength between 632.8 and 680 nanometres.

References in periodicals archive ?
Analysts say that for the use of 2-D bar codes to become widespread, the code reader must come preloaded on cell phones.
When this happens over the next 12 to 18 mouths, UDR already will be branded as the apartment company that uses 2-D bar codes for mobile marketing," Taraborelli said.
As with the packing list, the 2-D bar code data is always considered to be accurate.
During the past 18 months, several 2-D bar codes have been unveiled, joining others already available.
Gary: While 2-D bar codes consolidate data, recent hardware developments consolidate the management of that data.
2-D bar code that was developed by UPS to sort packages at high speed.
The new Kofax bar code engine not only reads low-resolution color images, but also improves recognition from black-and-white images and adds the ability to read high-density 2-D bar codes.
At this point, Code One is the only 2-D bar code that has yet to see a scanner made available; however, development efforts are underway.
With a 2-D bar code, this step is no longer necessary, because all the required information travels with the shipment.
NASDAQ: SCKT; PSE: SOK) unveiled the In-Hand Scan Card Xtreme(TM), a CompactFlash plug-in card with an integrated SE-923HS laser scan engine from Symbol Technologies to add PDF417 2-D bar code scanning capability to mobile computers based on the Windows operating system from Microsoft.
More and more identification papers such as passports, driving licenses and national ID cards contain a unique 2-D bar code that encodes personal details such as date of birth, address and even photo identification.
Its combination with CiMatrix' pioneering position in leading edge 2-D bar code technology now uniquely positions RVSI to open new market applications of very significant size.