Mind control is one way to control tomorrow's gadgets, but Microsoft is at work on something simpler but no less effective (comparatively speaking): Controllers that involve nothing but the electrical impulses that take place everyday in our muscle tissue.
The system uses a series of connectors attached to an armband that leverages Electromyography (EMG). As you can see in the video, this creates a system that translates the electrical activity found in our muscles into instructions for a computer. Or Guitar Hero.
The system in the video is shown as a forearm version, but further patent reading reveals a completely wearable network of sensors that would adorn a user's head, arms and legs. Like I said, the tech is, comparatively speaking, relatively simple - it is the implementation of said tech that's almost limitless.
Air guitar is only the beginning, although we'd need to be extraordinarily aware of our gestures and arm movements should a system become more mainstream, don't you think? [Muscle Computer Interfaces via Engadget]