https://apnews.com/article/subway-gun-scanners-ai-evolv-cdabf48e727d06c21a53e42a2a7a0249

NEW YORK (AP) — 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, according to newly released police data.

Through nearly 3,000 searches, the scanners turned up more than 118 false positives as well as 12 knives, police said, though they declined to say whether the positive hits referred to illegal blades or tools, such as pocket knives, that are allowed in the transit system.