The PLAY MP3 Player asks you to do an interesting thing to control it: you fold it up every which way. While it's not the most practical idea, it is a rather interesting study of form. For instance, instead of hitting "play," you fold the player into a triangular shape mimicking the button. To fast forward, you slide the player to resemble two triangles, and to stop all play you simply leave it as a square — the usual sign for stop.
The PLAY MP3 Player is a joint effort by designers Jun Pyo Kim, Keun Sol Kim, Sung Mi Kang and Joo Hee Park. Check out the diagram below for a better idea of how the folding system works.
Via Yanko Design