Tao Ma, conceptualizer of the bracelet phone, does it again. His new Roll Phone concept is the shortest phone in the world - that is, if it ever gets mass produced. The display is drawn out of the body like tissue or a tape measure. Don't worry, the keypad, made of very flexible material, can handle the punishment of constant use. The keypad comes out of the phone. You can easily mistake it for the battery, but the actual power source is an even smaller thing inside your keypad.
