What initially looks like a dental retainer with a set of ‘grillz’ attached to the end, is actually an MP3 player that fits on the roof of your mouth. The ‘Play-A-Grill’ MP3 player doesn’t require speaker or headphones, and the sound is transmitted via bone conduction. Only you can hear the music and no one else around you. To control the device, you simply press the buttons by using your tongue.
The interesting but rather absurd gadget was created by artist Aisen Chacin. The concept isn’t likely to become commercial or mainstream anytime soon.