Apparatus and methods are disclosed for simultaneously tracking multiple finger and palm contacts as hands approach, touch, and slide across a proximity-sensing, multi-touch surface. Identification and classification of intuitive hand configurations and motions enables unprecedented integration of typing,...http://www.google.com.au/patents/US20090249236?utm_source=gb-gplus-sharePatent US20090249236 - CONTACT TRACKING AND IDENTIFICATION MODULE FOR TOUCH SENSING
