Since the first infra-red virtual computer keyboard was made, I always know that some day there will be one like this. And here it is now.
And just like what I have already thought about, for a practical piano keyboard it needs to be capable to do weighted notes. This company reckons it’s technically possible. My feeling is it might have to somehow determine the speed of the movement? Or possibly the volume of the sound touching the table?
I’ll definitely be interested when they have the 88-key weighted notes version ready…