A pilot program testing AI-powered weapons scanners inside some New York City subway stations this summer did not detect any passengers with firearms — but falsely alerted more than 100 times.

The city’s new gun-detecting scanners set up at some subway stations produced false positives on over 4% of scans, according to the NYPD. The city tested the machines, which look like traditional metal detectors,

The month-long pilot of gun scanners in New York City’s subway system over the summer recovered zero guns, the NYPD said this week after City & State wrote about their silence.

The results are in. The scanners the NYPD tried using to catch guns at subway turnstiles did not get the job done. Critics of the technology say what is even more troubling is the fact that over 100 people were stopped by police due to so-called false positives.

NYPD officials said late Wednesday that the controversial Evolv weapons scanners Mayor Adams’ administration rolled out in the MTA subway system detected 12 knives and no guns over the course of a month-long pilot program this summer.

The controversial pilot of Evolv’s gun scanners in subway stations ended in August, and Mayor Eric Adams has said the department will tell us how it went. But when?