This is MYO, a gesture control armband that lets you communicate with your Mac, PC, phone or tablet with Bluetooth 4.0.
The armband, developed by Thalmic Labs, uses innovative technology that works by instantly measuring the electrical activity in your muscles using a 6-axis motion sensor to track movement.
The one-size fits all devices lets those who wear it control presentations, videos, content, games, browse the web, create music, edit videos and more with the use of various hand and finger gestures.
Check out the video below to see MYO in action:
Source: Uncrate

