A Japanese company is taking a stab at the elusive 3D interface. Why elusive? Well, we all know that interacting with 6 planes (3D) is far more complex than with 1 plane (2D).
Qumarion's idea is limited to posing of 3D figures, human bodies. A manikin has 16 joints, each with two sensors, sending data over a USB connection at 120 updates per second. As you move limbs and other body parts, the on-screen version mimics your actions. $750.
Source (translated by Google):