The Data Matrix module supports two modes of operation. One is suitable for printed symbols, which are usually well contrasted. The other is more appropriate for direct part marking methods such as dot peening or laser etching.
In addition, image preprocessing can be implemented to handle special cases such as textured substrates or unfavorable illumination. An additional utility program eases this task.

The reader can work in a fully automated way and be ready to decode whatever the symbol size, resolution, orientation, type or contrast. On the other hand, faster decoding can be achieved when necessary by providing a priori information or by restricting the area of interest to be processed.

Symbol deformation, as when the background surface is curved or tilted, is dealt with too.

Data Matrix and QR-Code symbols are built with a data redundancy principle that allows checking the correctness of the contents but also correcting erroneous bits of information. This is useful in case of possible damage due to scratches, dirt or misprinting. The 2D-CodeReader transparently handles error detection and correction.