This is nothing new you can look it up theres a private company that the police are partnered with I forgot the name I have it somewhere this company sends people to put random miniature microphones in random locations all over the US. Theres a website that has a graph giving you geolocations of the mics which if you saw it most of the east side is pretty much 99.9% completely covered in microphone drops where the middle & west cost have about somewhere between 40-78% of their states covered. These mics automatically ping on when theu detect certain noises like screams or a gunshot to send the location to the closest precinct avaliable. It's invasion unethical & government approved because it's a government contracted security company.

I'll try to find the link for you to show you the map of mic locations.