The Cambridge, Massachusetts city council has voted to terminate its contract with ShotSpotter, a gunfire detection technology system, within 90 days.

City councilors cited concerns over false positives generated by the acoustic detection system as a primary reason for ending the contract. The technology uses sensors placed throughout urban areas to detect and triangulate the location of gunshots, alerting law enforcement to potential incidents.

Council members also expressed concerns about the system's potential connections to immigration enforcement activities. These concerns appear to reflect broader debates about surveillance technology and its impact on community policing relationships.

ShotSpotter technology has been deployed in numerous cities across the United States as a tool to help law enforcement respond more quickly to gun violence. The system analyzes audio patterns to distinguish gunshots from other loud noises like fireworks or vehicle backfires.

The decision in Cambridge reflects ongoing scrutiny of police surveillance technologies in various municipalities. Questions about accuracy, privacy, and the effectiveness of such systems in reducing crime have led some cities to reevaluate their use of these tools.

The 90-day termination period will allow the city to wind down its use of the system and potentially explore alternative approaches to gun violence detection and response.