Detroit is spending millions on gunshot detection tech – is it an effective tool in the fight against violent crime?

Detroit invested millions in ShotSpotter, a gunshot detection system that uses acoustic sensors to identify and locate gunfire. The technology promised faster police response to shootings, but new research reveals it has failed to deliver on that core claim.

A study examining ShotSpotter's deployment in Detroit found the system did not reduce officer response times to gunshot incidents. This outcome contradicts the primary justification municipal leaders offered when approving the expensive contract. The city's investment in the acoustic detection network was grounded on the premise that faster identification of shooting locations would enable quicker law enforcement intervention.

The research raises questions about Detroit's expenditure on the system and whether the funds could have been deployed more effectively elsewhere in public safety efforts. City officials have promoted gunshot detection technology as a modern tool to combat violent crime, particularly in neighborhoods experiencing elevated shooting rates.

Detroit joins other major cities like Chicago and Los Angeles that have adopted ShotSpotter technology, often in high-crime areas. The systems work by detecting acoustic patterns consistent with gunfire and automatically alerting police dispatchers to the location. However, effectiveness varies considerably across jurisdictions.

The finding comes as Detroit faces persistent challenges with homicides and shootings. Police departments nationally have sought technological solutions to violent crime, though independent research frequently reveals gaps between promotional claims and real-world performance. ShotSpotter's manufacturer has disputed critical research findings in other cities, arguing that the system works best when integrated with community policing strategies.

Detroit policymakers must now weigh whether to continue funding ShotSpotter at current levels or redirect resources toward alternative crime-reduction approaches. The city's experience underscores the importance of rigorous evaluation before and after deploying expensive law enforcement technologies. Without demonstrated improvements in response times or crime reduction, continued investment requires stronger justification to residents and taxpayers.