In this concept the hand is the main support while the fingers are an extension in which the numbers are displayed, I suppose it uses infrared but I might be wrong. The most creative and useful part of the Finger Touch is the keypad system that was used: normal 3×4 with each finger joint being a number.
The Finger Touch was
designed by Sunman Kwon with the purpose to make
chatting easy, it is a replacement for the “big” mobile
phones that use 3.5G and 4G technology – the ones that
let you make video phone calls and much more.