People with paralysis could drive this wheelchair using their tongues & a smartphone

Will your doctor offer you this as a possibility? Will they even know about it?
Sounds like a possibility for all sorts of uses for locked-in patients. But I don't know if tongue control still exists in those patients.
http://medcitynews.com/2013/12/wow-week-tongue-drive-wheelchair/?
I think I would rather figure out a way to do this without the piercing.

Georgia Tech professor Maysam Ghovanloo founded a startup that’s working with the university to test a tongue-drive wheelchair. It works like this: A magnet is attached to the tongue of a person who’s lost all movement in his or her arms and legs, and a sensor headset is worn.  As the tongue moves, the sensor picks up the precise movement of the magnet, sends it to a smartphone program which in turn sends a signal to the wheelchair to move in that direction.

Video at link.