The present invention teaches a variety of methods and systems for providing computer/human interfaces. According to one method, the user interfaces with an electronic device such as a computer system by engaging a sensor with desired regions of an encoded physical medium. The encoded physical medium...http://www.google.fr/patents/US6076734?utm_source=gb-gplus-shareBrevet US6076734 - Methods and systems for providing human/computer interfaces
Methods and systems for providing human/computer interfaces
