That's assuming that audio from these sensors is at all useful for eavesdropping on people. Try a speakerphone lately? Even with higher quality codecs than we g

That's assuming that audio from these sensors is at all useful for eavesdropping on people. Try a speakerphone lately? Even with higher quality codecs than we got in the POTS days and things like beamforming, the result is pretty terrible in decent sized conference rooms. Now try this outdoors, further away from people, with the noise floor of a city instead of a quiet room. The cases people point to where ShotSpotter has picked up understandable words have been people very close to sensors who were shouting immediately before, during, or after gunfire the system picked up. But at that point, it's unreasonable to claim some sort of violation of privacy when people are screaming for all to hear.