I personally feel that the problem is not that of having a tactile feedback. While I don't think it can replace mouse/keyboard, I don't see too much of a proble

I personally feel that the problem is not that of having a tactile feedback. While I don't think it can replace mouse/keyboard, I don't see too much of a problem of it replacing touchscreens. The problem with most of the existing gesture based interfaces is that they are interacting with the interface in an indirect way, as in the gestures are used control something like a pointer on the screen, and users have no way to see how they are positioned relative to the interface they are interacting with. If they are used in ways similar to a touch screens, I think it would be pretty natural, without too much hand-waving in the air.