3 ms·
Sensors can tap into mobile vibrations to eavesdrop remotely
- rolph 4y agothis might also work with a laser, at a somewhat increased range, like a windowbounce device. https://en.wikipedia.org/wiki/Laser_microphone https://en.wikipedia.org/wiki/Laser_microphone laser needs precise aim, this radar needs very proximal range in the order of 1yd or less.