The good folks at Helios Interactive appear to be bringing us another step closer to the ubiquitous, though still fantastical, 'Minority Report interface'.

"In this simple but visual example we are using a grasping hand to draw 3D ribbons based on the hand position or navigating the camera within 3D space. Users can use a hand pose gesture to easily toggle between drawing and camera mode. The application is running on a Samsung transparent LCD panel which displays white pixels as being transparent."

It seems to be a small step in the right direction.