Undark: In Some Cities Second Thoughts About Gunshot Detection Sensors

Recent studies on technology that alerts police to gunfire have found it has little impact on shootings or prosecutions.

More than seven years ago, when the city of Chicago began its broad deployment of acoustic technology to identify and locate gunfire in high-crime neighborhoods, supporters promoted the system — which uses acoustic sensors, GPS software, and machine learning algorithms to alert the police in real-time — as an effective way to reduce handgun violence.