> Right now I can't find something on reading keyboard vibrations with lasers, but here's one doing it acoustically and one doing it via acclerometer of a phone

> Right now I can't find something on reading keyboard vibrations with lasers, but here's one doing it acoustically and one doing it via acclerometer of a phone on the table: And here's how to get the acoustics with a chip packet, or glass of water or pot plant: https://news.mit.edu/2014/algorithm-recovers-speech-from-vibrations-0804 https://news.mit.edu/2014/algorithm-recovers-speech-from-vib... I'm not sure if that's high fidelity enough to match to a keyboard, but I'm sure that if MIT can do it, someone else can do it better.