Tongue Sight?

Okay, this is one of the stranger things I've heard in a while.

By routing signals from helmet-mounted cameras, sonar and other equipment through the tongue to the brain, [military researchers] hope to give elite soldiers superhuman senses similar to owls, snakes and fish.

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The device, known as "Brain Port," was pioneered more than 30 years ago by Dr. Paul Bach-y-Rita, a University of Wisconsin neuroscientist. Bach-y-Rita began routing images from a camera through electrodes taped to people's backs and later discovered the tongue was a superior transmitter. (italics mine)

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In testing, blind people found doorways, noticed people walking in front of them and caught balls. A version of the device, expected to be commercially marketed soon, has restored balance to those whose vestibular systems in the inner ear were destroyed by antibiotics.