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Barcode | by Christiaan Colen
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Barcode

Example of a 2D code 128 barcode.

 

Originally barcodes systematically represented data by varying the widths and spacings of parallel lines, and may be referred to as linear or one-dimensional (1D).

 

Later two-dimensional (2D) codes were developed, using rectangles, dots, hexagons and other geometric patterns in two dimensions.

 

Read more: en.wikipedia.org/wiki/Barcode

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Taken on April 16, 2016