It turns out that the tongue isn't tied to the spinal cord (had we paid better attention in Bio101, we'd have known that), which goes a long way towards keeping it unimpared in the event of spinal cord injury. A team at Georgia Tech is developing a tongue-based apparatus for disabled
people that, which not as elegantly packaged as the GRAViTONUS
device we've seen earlier, fashions a pointing device from a small tongue-mounted magnet and sensors near the cheeks. The team has promised interactivity way beyond what can be done with "sip and puff" input methods; think "mouth replaces mouse" and you've got the idea. Hopefully Mavis Beacon tongue-typing and the incorporation of haptic feedback won't be far behind.