Semacode

Semacode is a software company based in Waterloo, Ontario, Canada. It is also this company's trade name for machine-readable ISO/IEC 16022 data matrix symbols, a type of barcode resembling a crossword puzzle, which encode Internet URLs.
Semacodes are primarily aimed at being used with cellular phones which have built-in cameras, to quickly capture a Web site address for use in the phone's web browser. Semacodes are in fact DataMatrix encoded URLs.