Ever want to play Tetris on your arm? Well, a Ph.D. student from Carnegie Mellon University might have found out how. Chris Harrison has developed ‘Skinput’, an ingenious little device that straps onto your arm, projects an interface onto your skin, and senses the vibrations of your taps to control portable electronic devices.

I hope this thing makes it onto the marketplace and doesn’t become just a fancy idea that’s never made available to the public. Fortunately, that Microsoft logo at the beginning of the video may be an indication that you’ll be able to grab one of the things for yourself in the foreseeable future.

[Chris Harrison]