Recently I’ve been messing around with Leap Motion. The fidelity on the leap is pretty incredible which has direct implications to the future of interaction design.
What is Leap? The Leap is a small USB peripheral device which is designed to be placed on a physical desktop, facing upward. Using two cameras and three infrared LEDs, the device observes a roughly hemispherical area. It is designed to track fingers (or similar items such as a pen) which cross into the observed area.