SpeakCup Jamie Zigelbaum, Angela Chang, James Gouldstone, Joshua Jen Monzen, Michael Carvajal, Kevin Rustagi, and Hiroshi Ishii
SpeakCup is a digital voice recorder. Rather than being controlled via buttons and blinking lights, SpeakCup uses shape to proscribe function. It takes the form of a small rubber disc with holes in its center on one side. When the holes are pressed in, forming a small cup, SpeakCup absorbs and contains sound. When the holes are pressed out, the stored sounds (embodied as fluxuating lights) are released.
Some Challenges for Designers of Shape Changing InterfacesCHI 2009 workshop on transitive materials