The Leap Motion Controller is a USB peripheral used to to control home PC's using hand gestures. This Device measures roughly up to a hemispherical area of 1m. This Device can be used with any Pc having a USB port and windows or mac. Leap Motion Controller can be used to pinch-to-zoom on pictures, maps, etc, navigating through websites, playing games.
Leap motion can be pre-ordered for $79.99
Leap Motion