There's been some pretty cool research using tongue sensations to supplement missing senses in people, like the sense of balance and even limited amounts of vision. Making this cheap and accessible to everyone is pretty awesome.

Even if it does look fucking goofy in use.

Future transhumans will be genetically engineered tongue-bodies wrapped around a human brain in a highly sensitive robotic shell. They will be able to taste-cognate the very fabric of spacetime.

I've got an arduino lying around doing nothing, the obvious next step is to get hold of the rest of the parts and start composing music for tongues.

Hahaha. I'm totally building a tongue compass.