Is ShotSpotter, the widely used and widely criticized gunshot detection system, accurate or not? This has become a heated debate in Chicago with Northwestern Law School finding that nearly 90% of alerts are not gun-related incidents while ShotSpotter claims 97% aggregated accuracy. Who is right?
IPVM explains both sides, explains how ShotSpotter calculates their accuracy, analyzing the limitations and possible flaws in both and how this can impact city usage of a gunshot detection system.
Update June 30th, 2021: ShotSpotter sent IPVM responses to this article that we have added.