libdmtx - software for reading and writing Data Matrix barcodes libdmtx is open source software for reading and writing Data Matrix barcodes on Linux, Unix, OS X, Windows, and certain mobile devices. At its core libdmtx is a shared library, allowing C/C++ programs to use its capabilities without restrictions or overhead. Data Matrix barcodes are two-dimensional symbols that hold a dense pattern of data with built-in error correction. The Data Matrix symbology (sometimes casually referred to as "DataMatrix") was invented and released into the public domain by RVSI Acuity CiMatrix. WWW: http://libdmtx.sourceforge.net/