Police use facial recognition to scan one million faces in WA trial leading to 122 arrests

Western Australia police conducted a five-month trial of real-time facial recognition, scanning over 1.38 million faces and resulting in 122 arrests and nine false alerts. The technology was deployed across 43 locations, including the Perth Royal Show, with a very low reported error rate. Civil liberties groups criticized the police's calculation of the false alert rate, emphasizing that actual incorrect arrests can only be confirmed after court outcomes.