Leap Motion Leap

The Mouse Replacement Courtesy Leap Motion

Video: Watch The Leap Pick Up On Movements

Most gesture-controlled devices sense large movements—a swinging arm, for example. The Leap, a three-inch USB device, is sensitive enough to track individual fingertips. Within an eight-cubic-foot area, infrared LEDs and 1.3-megapixel camera sensors detect motion at one one-hundredth of a millimeter—200 times the sensitivity of the Microsoft Kinect. In September, Leap Motion sent units to hundreds of independent developers, who are now creating applications for all types of onscreen manipulation. $70