Scientists at the Georgia Institute of Technology in the US have developed a way of controlling a computer with the tongue. A tiny magnet is implanted in the user's tongue. Its movements are traced by an array of sensors mounted on a headset or even on an orthodontic brace inside the mouth. The Tongue Drive system, as it's called, can be used to direct a cursor across a computer screen or steer an electronic wheelchair, amongst a whole range of other potential uses. Read more about it at:

http://gtresearchnews.gatech.edu/newsrelease/tongue-drive.htm

http://www.pcpro.co.uk/news/221043/scientists-lick-the-tonguecontrolled-computer.html

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