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.
The most popular 2D bar codes are Data Matrix and QR Code.
The excitement centers on 2D bar codes (also referred to as Quick Response, or QR, codes), which streamline how consumers connect with and consume content.
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.
As for me, now that I have a 2D bar code reader, I'm perfectly willing to scan the next tag that I see.
The 2d code blog is the first of two blogs in this review that focus solely on 2D bar codes.
If used well, 2D bar codes are an inexpensive way for organizations to interact with consumers on the go.
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.
The use of 2D bar code applications is therefore expected to witness significant growth in market segments that are looking to adopt RFID, as a long-term vision.
Scan a 2D bar code, and it opens right there a complete data file without referencing a lookup file in a distant computer database.
The use of the PDF-417 2D bar code will require only one scan to collect the same information.
The development of new applications, such as 1D and 2D bar code reading, face recognition and business card scanning, is also adding to this demand.