Described as, "bi-manual, multi-point, and multi-user interactions on a graphical interaction surface," this nothing but cool! Multi-touch interaction allows for a system to sense more than one finger at a time at a touch-screen. The multiple fingers could belong to one person -- or more than one in the case of an interactive wall or tabletop. Play the demo (follow the link for a higher quality demo) to get a sense (pun intended) of the possibilities multi-touch allows for in a user interface. The technique demonstrated here is force-sensitive with a sensing resolution better than 0.1-inch at 50Hz. The technique relies on what is called frustrated total internal reflection -- the same idea behind the biometrics technology.
How cool is that?! Check out Jeff Han's site for more cool!
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