22-01-2011, 09:59 AM
following links will help you.
http://sciencedailyreleases/2008/06/080630090821.htm
http://eniac.forumotiont255-tongue-drive-system-to-operate-computers
http://esciencenewsarticles/2008/06/30/tongue.drive.system.lets.persons.with.disabilities.operate.powered.wheelchairs.computers