According to a filing with the U.S. Patent and Trademark Office, Apple is investigating an advanced tablet stylus design capable of simulating the texture of onscreen graphics as it moves across a display surface.
AppleInsider – Frontpage News
Apple Day – Apple, iPod, iPad, iPhone, iTouch, iMac, iBook
Apple Day – Apple, iPod, iPad, iPhone, iTouch, iMac, iBook