Skinput is a new skin-based touch user interface, “based on an armband straddling the wearer’s biceps and detecting the small vibrations generated when the user taps the skin of his arm.” It’s great for games, especially Tetris. Continue reading for a video.

Due to different bone densities, tissue mass and muscle size, unique acoustic signatures can be identified for particular parts of the arm or hand (including fingers), allowing people to literally control their gear by touching themselves.

[via Engadget]