By all accounts, it should have looked like a magic trick. A small cube floated above a table, shimmering faintly as a person ...

Remember the scene in Iron Man 2 where Tony Stark rediscovers a new element and is handling virtual 3D holographic elements ...

Researchers unveil the first 3D holograms that can be touched and moved, marking a major step toward fully interactive ...

the Iron Man armor. The second coolest part, though, is the sweet holographic computer interface that Tony Stark uses to control it. No mouse, no keyboard, just hand gestures and voice controls.