A new USB device, called The Leap, creates an 8-cubic-feet bubble of “interaction space,” which detects your hand gestures down to an accuracy of 0.01 millimeters — about 200 times more accurate than “existing touch-free products and technologies,” such as your smartphone’s touchscreen… or Microsoft Kinect. The Leap is available to pre-order now (http://goo.gl/dnUla) for $70, and is expected to ship early next year.