GLOSSARY

Barcode

A barcode or bar code is a method of representing data in a visual, machine-readable form. Itis a series of bars and spaces read by a scanning device for translation into a numeric or alphanumeric identification code that represents data in machine-readable or computerised form.

What is Barcode?

A barcode or bar code is a method of representing data in a visual, machine-readable form. Itis a series of bars and spaces read by a scanning device for translation into a numeric or alphanumeric identification code that represents data in machine-readable or computerised form.

Initially, barcodes represented data by varying the widths and spacings 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 matrix codes or 2D barcodes, although they do not use bars as such. 2D barcodes can be read using purpose-built 2D optical scanners, which exist in a few different forms. 2D barcodes 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 2D barcode. A mobile device with an inbuilt camera, such as smartphone, can function as the latter type of 2D barcode reader using specialized application software (The same sort of mobile device could also read 1D barcodes, depending on the application software).

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