A method and system for enabling user interaction with computer software running in a computer system. The user interaction is via an interface, such as a sheet of paper bearing information relating to the computer software and coded data indicative of an interactive element relating to the computer...http://www.google.fr/patents/US6789731?utm_source=gb-gplus-shareBrevet US6789731 - Computer system interface surface with coded marks
Computer system interface surface with coded marks
