Tongue-driven wheelchair uses high-tech power piercing  Nov 28,
2013  Tongue piercings may be associated with rebellion, but one
researcher is aiming for revolution instead, creating a Tongue
Drive System that allows paralyzed wheelchair users to more
easily navigate than traditional hands-free control options. The
handiwork of a team at the School of Electrical and Computer
Engineering at the Georgia Institute of Technology, the system
uses a magnetic tongue stud which is wirelessly tracked by a
headpiece, with up to six instructions differentiated by tongue
position.  Traditionally, those without the use of their arms
and legs would likely use a "sip-and-puff" control system, which
uses different patterns of blowing or sucking into a straw at
mouth-level to steer a wheelchair or navigate a computer
interface. However, clinical trials of the Tongue Drive System
suggest it can be up to three times faster in use than the old
method, while still maintaining the same levels of accuracy,
even when users have cons