Scientists at Georgia Tech are currently developing a technology which could transform the human mouth into a virtual computer. The teeth would be turned into a keyboard while the human tongue is transformed into a biological controller, a joystick if you will, of sorts. This isn't just some technology to be used by gamers or other ordinary computer users in the future (although that might come to pass); but rather a technology being developed for quadriplegics.

The tongue would be equipped with a magnetic system which controls all. By "all," I mean all--appliances, computers, wheelchairs, etcetera. According to source, one potential user called it "grotesque," but really, I could imagine that this technology, when fully-functional, could equate to what a miracle is for other people. The technology is currently in its early stages and a few issues pose potential problems such as reducing the size of the headgear into that of a dental retainer; only time could tell though, if all the scientists' efforts would ever bear fruit.