Data Matrix code

Like the bar code, the Data Matrix code is an optical code recognition method and its structure makes it particularly suitable for quick, reliable and unique sensing. Unlike the bar code (1D code), the Data Matrix code is two-dimensional. This significantly increases the information density. In addition, the Data Matrix code can be scanned from all angles and – due to redundant data – still be read when individual areas have been damaged.

The Data Matrix code can have a size of 10 x 10 to 144 x 144 fields, but it can also be printed in non-square forms. An uninterrupted frame from top left to bottom right acting as a search element and informing the reader on the three-dimensional position surrounds half the Data Matrix code. The other two sides are surrounded by an alternating black and white pattern that serves as a "clock pulse" and makes the code size quickly denumerable. With its maximum size, this matrix code can transport 1558 extended ASCII characters (eight bits), 2335 ASCII characters (seven bits) or 3116 digits.

The Data Matrix code, initially used in the electrical industry for printed-circuit board marking and in chip manufacturing and also successful in the automotive industry, has meanwhile also become generally known as digital stamp.