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From CNN Money…
The controller itself is an unassuming 3-inch-by-1-inch-by-0.5-inch black box. Leap Motion can track the movements of all 10 fingers on your hand down to 1/100th of a millimeter, which is smaller than the tip of a pin. CNNMoney tried the system on a laptop, and the response was lightning-fast, tracking movements at 290 frames per second.
It’s $70, and Best Buy will begin taking preorders next month. Besides being convenient, the device could have many practical applications, such as robotic surgery.