5 ms·
It could probably be done now just by looking at hand shapes and if you’re a touch typist you might not even need the projection, just a dot or two (which could
by cgriswald 6y ago
It could probably be done now just by looking at hand shapes and if you’re a touch typist you might not even need the projection, just a dot or two (which could just be stickers on a surface) to orientate your hands over nothing.
- freeone3000 6y agoHand shapes for typing are far from standardized or recognisable. Nowhere near the accuracy a laser beam break gives you. (The projection LED is separate from the detection laser, which is much lower power)