Here is an interesting article on to use your hands to control computers similar to what you might see in movies such as Minority Report. Video after the jump.
Using a $30 dollar camera and this piece of Podtech software that's still in development, you can play with computers just like Tom Cruise did in Minority Report, by grabbing files by the nipples and dragging them around the screen. Using topological depth technology, it figures out what's the static background, and differentiates it between the changing foreground. By pinching areas within the camera's view you section off ovals which you can use to rotate and move around the display, and the researcher said more gestures are being worked on. What you're looking at is basically an advanced, but limited, version of Eye Toy in disguise, but think about how many games you could use this technology with. Waving to other people on PlayStation Home, pointing soldiers around the battlefield, clicking on enemies in W.O.W., literally grabbing Pikmin on screen and throwing them around, giving a last boss the finger before delivering the final blow, and of course, grabbing boobs.
Expect Microsoft to use this technology to jump into the motion sensitivity scene late. Instead of a knock-off Wiimote they'll just let you do it with your hands by inserting a chip in your wrist.