Infrared-projected keyboards aren't a big thing just yet, but here's an R2-D2 version that's as cool as it can get.

The device connects to any compatible iOS, Android, Windows 7/8, OS X via Bluetooth 3.0. It then projects an infrared QWERTY keyboard on any flat surface. The infrared sensor registers your finger blocking a certain key and then it translates that into a digital signal.

Check out the video demo below:

[Run'A Town, Technabob]