Last week, the city of Roanoke, Virginia, ended its brief and fumbled experiment with Flock Safety's Raven acoustic gunshot detectors (AGD) after 41 of the 75 approved devices had been installed—30 of them in the wrong locations. Roanoke isn't alone. Numerous other cities have canceled contracts with Flock or with SoundThinking Inc, a competing provider of ShotSpotter, a similar technology, over cost, effectiveness, and privacy concerns related to scattering microphones across a city.
