bar code

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bar code

(bahr kōd)
A code consisting of a group of printed, variably patterned bars and spaces scanned by lasers into a computer to identify the object it labels.

bar code

A parallel array of alternately spaced black bars and white spaces representing a coded number, numbers, or letters, depending on the format employed. It is used clinically for patient sample identification as well as analyzer and operator ID.
See also: code
References in periodicals archive ?
Most printer suppliers also support 2-D bar codes on a wide range of equipment.
Simultaneously, development work in 2-D bar codes continues.
To begin, all inventory and its database arrive everywhere simultaneously with a 2-D bar code. There is no potential for delay in processing receipts or otherwise handling materials because paperwork or electronic data interchange notices are not yet available.
All of this means that the significant barriers to widespread use of 2-D bar codes have now been removed.
Analysts say that for the use of 2-D bar codes to become widespread, the code reader must come preloaded on cell phones.
As with, the original package scanners, these small-item readers rely on charge coupled device (CCD) technology similar to video cameras to read the 2-D bar codes. When the symbol is illuminated, the scanner collects multiple images of the 2-D symbol.
The 2-D bar codes most often supported are PDF-417, DataMatrix, and MaxiCode.
Meanwhile, several hand-held and fixed-position scanners capable of reading multiple 2-D bar codes were unveiled by suppliers.
There has also been a foot race lately among suppliers to develop fixed-scanners for 2-D bar codes.
While some models use laser technology, the bulk of scanners commercialized so far for 2-D bar codes use CCD technology (see artwork).
But 2-D bar codes are still looking for their Lotus 1-2-3.