The second technology is the parent identification data or Data Matrix. This is an optical technology, evolution bar-code conventional. Unlike its predecessor, allows the recording of a large volume of information in a small.

As with RFID, this technology, in addition to the serial number that uniquely identifies the product, allows the recording of other data that improve performance and provide valuable information to management traceability system.

The Data Matrix it may be printed on the outside of the case of the product to identify, or on a label stuck for later. Data capture is performed with a 2D optical scanner.