Just an idea to share, maybe it's possible to track the light reflection (infrared light) on a hand nail like this:
By placing a few light sources, it's possible to get white dots/lines. The problem is that it's pretty hard to inculde the thumb's nail in the process.
I'm bulding a kind of a line to have a lot of sources and see if it works correctly. Right know I don't know how to generate a click event, the natural way is to use stereoscopy but maybe by hiding the top of the clicking finger (~ 0,5s) and go back to the original position (like a click on a mouse but in order to hide the nail).
I'm pretty disapointed because its a strange technic but I really don't want to disassemble a screen so I'm looking for a solution using front detection.
