https://youtu.be/FKXOucXB4a8
"High speed cameras can decode the slight vibrations of objects in videos to recover audio. Even through sound proof glass."
Interesting. I guess it's another case of a type of sensor that is becoming democratized
Remember how the Soviets used IR detecting vibrations to eavsedrop on the US embassy since the 1940s
https://en.wikipedia.org/wiki/Laser_microphone