The HCI win doesn't come from making gestures in thin-air, it comes from being able to interpret regular tactile interactions with physical objects. Consider t

The HCI win doesn't come from making gestures in thin-air, it comes from being able to interpret regular tactile interactions with physical objects. Consider the playing cards example: instead of tapping on digital images of cards, you can now touch and hold physical cards to manipulate a digital system with one convenient sensor.