It's called laser spying and it was perfected in the 1970s, btw.
Guardian reveal NASA succeeded in using space telescope to decipher voices in a room. Telescope analysed the vibrations of the clothing being worn by the room occupants. This was in 2005.
http://12160.info/page/guardian-reveal-nasa-succeeded-in-using-space-telescope-to-deciph
You have to be under a tree to avoid this kind of surveillance. The thousands of leaves constantly shifting disrupt the signal, working like a kind of farraday cage.
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