A mouse system (100) for authenticating a user and providing access to a computer (212) includes a pointing device and card reader (106) which share a computer interface port (222) of the computer (212). User information is read off the card (104), converted to pointing device codes, and provided to...http://www.google.com.hk/patents/US6055592?utm_source=gb-gplus-share專利 US6055592 - Smart card authentication system comprising means for converting user identification and digital signature to pointing device position data and vice versa using lut
