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ĭata Matrix codes are becoming common on printed media such as labels and letters.

The US Electronic Industries Alliance (EIA) recommends using Data Matrix for labeling small electronic components. Fidelity of the marking and reading systems are the only limitation. Ī Data Matrix is scalable commercial applications exist with images as small as 300 micrometres (0.012 in) (laser etched on a 600-micrometre (0.024 in) silicon device) and as large as a 1 metre (3 ft) square (painted on the roof of a boxcar). The most popular application for Data Matrix is marking small items, due to the code's ability to encode fifty characters in a symbol that is readable at 2 or 3 mm 2 (0.003 or 0.005 sq in) and the fact that the code can be read with only a 20% contrast ratio. Symbol sizes vary from 10×10 to 144×144 in the new version ECC 200, and from 9×9 to 49×49 in the old version ECC 000 – 140.Ī Data Matrix on a Mini PCI card, encoding the serial number 15C06E115AZC72983004 As more data is encoded in the symbol, the number of cells (rows and columns) increases. The finder pattern is used to locate and orient the symbol while the timing pattern provides a count of the number of rows and columns in the symbol. Within these borders are rows and columns of cells encoding information. Every Data Matrix is composed of two solid adjacent borders in an 'L' shape (called the 'finder pattern') and two other borders consisting of alternating dark and light 'cells' or modules (called the 'timing pattern'). Depending on the coding used, a 'light' cell represents a 0 and a 'dark' cell is a 1, or vice versa. A Data Matrix symbol can store up to 2,335 alphanumeric characters.ĭata Matrix symbols are rectangular, usually square in shape and composed of square 'cells' which represent bits.

Error correction codes are often used to increase reliability: even if one or more cells are damaged so it is unreadable, the message can still be read. The length of the encoded data depends on the number of cells in the matrix. Usual data size is from a few bytes up to 1556 bytes. The information to be encoded can be text or numeric data.

An example of a Data Matrix code, encoding the text: 'Wikipedia, the free encyclopedia'Ī Data Matrix is a two-dimensional code consisting of black and white 'cells' or dots arranged in either a square or rectangular pattern, also known as a matrix.

Bar one 6.0 lite shows different check code