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 ?
Customers will be able to check if the liquor brand is genuine besides other details by scanning the 2D Bar Code," a senior excise official said.
Almost every company in the Auto ID industry has invented its own bar code, but industry standards organizations have essentially recommended use of one of three of the numerous 2D bar codes out there, based on the expected application," says Correa.
The most popular 2D bar codes are Data Matrix and QR Code.
The 2d code blog is the first of two blogs in this review that focus solely on 2D bar codes.
He holds more than 60 United States patents, and is the inventor of 2D bar code PDF417, which has been widely adopted as the 2D bar code standard by many different industries in many countries.
As far as the actual 2D bar code is concerned, Toole said most industrial marking systems have embedded software to generate the 2D codes.
Datastrip is a leading provider of 2D bar code software, hardware and biometric verification devices, including the Datastrip2D/ 2DSuperscript high-density bar code Software Developers Kit (SDK); the DSVerify2D handheld integrated bar code, smart card, passport and fingerprint reader; and the PCRead2D reader for decoding 2D bar codes on a PC.
It can also be deployed in any back-end architecture supporting 2D bar code decoding and is compatible with the decoding of all 1D bar code formats.
PCRead2D is a USB-powered, TWAIN-compliant, single card sheet-fed card scanner that reads any credit card-sized ID card utilizing a 2D bar code, including Datastrip's 2D Superscript and Datastrip 2D symbologies and PDF-417.
Under the terms of the agreement between the two companies, Datastrip has agreed to purchase Identix DFR(R)-200 fingerprint readers and to license BioEngine for integration into its 2D bar code identification storage and verification device.
It automatically discriminates between all major 1D and 2D bar code symbologies, including DataMatrix, PDF-417, MaxiCode, QR Code, US Postal Service Postnet, SuperCode, Aztec Code, VeriCode, DataGlyph, and the new UCC RSS-14/Composite Code.