youre talking about some sort of camera sensor that knows where your hands are so you can 'minority report' the onscreen action right?
not unreasonable to expect some devs to try it with the camera thats inside the unit. but its not integral to the unit. youre expecting too much at this point if thats important. it aint 2194 yet, and this aint star trek.
the machine does also have motion sensors inside it which can detect tilting movement. it also has a gyroscope which can also detect if the machine is tilted, turned etc. etc.