ZeroN is the name of the project carried out by Jinha Lee. ZeroN uses magnets, a Kinect visual system (webcam based), plus a special software that enables either the computer to move a steel ball around in space, or a human to just grab it and move it, essentially telling the computer where it should go. It can even remember how it was moved, then repeat the movement automatically.
What if materials could defy gravity, so that we could leave them suspended in mid-air? ZeroN is a physical and digital interaction element that floats and moves in space by computer-controlled magnetic levitation.
Source: Lee Jinha