Thalmic Labs MYO Armband
We've seen the Leap Motion Controller use relatively antique infrared sensors to translate your hand movements into input your computer understands (sort of), but it was limited to say the least. The Myo Armband uses Thalmic Labs' proprietary EMG sensors to sense the electrical activity on your arm's muscles, as well as motions and rotations, to wirelessly control your computer or mobile device.