Tracking fingers with the Wii Remote

Using an IR led array and some reflective tape, you can track fingers in thin air using the Wii Remote.

The Wii Remote has an infrared camera in the front that is normally watching for the infrared LEDs that are mounted in the sensor bar. This camera is actually quite sensitive and can be used for some cool things! Jcl5m has come up with a method that uses reflected IR light from small reflectors to provide the Minority Report style interaction.

http://www.youtube.com/watch?v=0awjPUkBXOU