Massachusetts City Ends Contract with Gunshot Detection Technology

A Massachusetts city has decided to discontinue using ShotSpotter, a gunshot detection system. This technology helps police identify possible shootings in real time. It works by deploying acoustic sensors above streets, which are designed to detect gunfire-like sounds and alert law enforcement automatically.

The Cambridge City Council’s decision came after critics argued that the system is unreliable and can lead to over-policing. There are also concerns about possible connections to federal immigration enforcement. The move aligns with a similar decision by Chicago earlier this year, indicating growing resistance in some cities against the use of the technology.

During a council meeting, five Cambridge city councilors voted in favor of ending the contract, while two opposed, and two abstained. The decision requires the city manager and police department to stop using ShotSpotter within 90 days. Consequently, the devices will be removed from various locations across Cambridge.

ShotSpotter is operated by SoundThinking, claiming the technology saves lives, speeds up police responses, and aids in evidence recovery. Alerts are sent to law enforcement within 60 seconds.

Despite the benefits outlined by SoundThinking, critics emphasize the lack of sufficient independent scientific validation for the technology. They point to issues such as false positives and the triggering of alerts by other loud noises like car backfires. Concerns also include the company’s alleged association with Immigration and Customs Enforcement (ICE), which many in Cambridge find objectionable.

Councilor Ayah Al-Zubi, who co-sponsored the resolution to remove ShotSpotter, stressed risks related to data sharing and privacy. “There was once a time when there was interest in this technology, but now we know more about its effectiveness and consequences,” Al-Zubi stated.

In response, SoundThinking defended its services in a statement. The company highlighted its long-term collaboration with the Cambridge Police Department, emphasizing the unbiased and effective nature of its detection system.