This projector concept by designer Sunman Kwon uses similar technology to that of the Virtual Keyboard that we loved so many years ago. Each of your finger segments on the inside of your hand are turned into keys, representing three letters for each segment or joint. What you end up with, is a keyboard literally in the palm of your hand. This would make for a remarkably portable input device that could just dangle on your wrist waiting for the next time you needed it, then with a little Bluetooth handshake, you’re ready to type up a storm.
Check out how you can fly in virtual space by using an Oculus Rift and a Wii Balance Board.