Sensitive Objects technology is a fresh new approach to the touch panel concept—tap the flat surface and the acoustic signature unique to the point you tapped is analyzed. If it’s recognized, the intended action is executed. While that’s not new to touchscreens (surface acoustic analysis has been used for a while in flat-panel touch-screens), it looks like Sensitive Objects is trying to apply the technique to a whole range of objects, so that your future gadget might respond to touches all over, not just on its screen.
Product Page [Sensitive Objects via WMMNA]
