Barcode
From Wikipedia, the free encyclopedia
For the taxonomic method, see DNA barcoding.
"Wikipedia" encoded in Code 128
"Wikipedia" encoded in Code 93
Aztec Code public domain bar+imgmatrix example
"Wikipedia, the free encyclopedia" encoded in the DataMatrix 2D barcode
For further information specifically on Matrix codes, see Data matrix (computer).
A bar code (also barcode) is a optical machine-readable representation of data. Originally, bar codes represented data in the widths (lines) and the spacings of parallel lines and may be referred to as linear or 1D ( 1 dimensional) bar codes or symbologies. But they also come in patterns of squares, dots, hexagons and other geometric patterns within images termed 2D (2 dimensional) matrix codes or symbologies. It is important to note that both the patterns (lines, squares, dots, etc.) and spacings constitute the data encodation schema.
