Leap

[Kevin Cheli-Colando <billowhead@gmail.com>]

I think these were mentioned here earlier but they are almost a
reality at this point

https://www.leapmotion.com/

And $80 is pretty dirt cheap for this kind of thing I think (if it
really works as advertised)

Just think of what you could do with one of these mounted to an instrument.

Kevin

-- 
Till now you seriously considered yourself to be the body and to have a
form. That is the primal ignorance which is the root cause of all trouble.

- Ramana Maharshi (1879-1950)