Nice. Camera ICs are so cheap now you can do touch that way. There have been lots of attempts to do touch-sensitive robot skin with things such as custom silicon arrays of strain gauges. Too expensive in small volume.
(The price of robot force-sensing devices is insanely high due to low volume. That's why robots have inadequate touch sensors. I built a force-sensing wrist out of a 3DConnection six-DOF knob input device.)
(The price of robot force-sensing devices is insanely high due to low volume. That's why robots have inadequate touch sensors. I built a force-sensing wrist out of a 3DConnection six-DOF knob input device.)