The New York subway has retired its controversial K-5 robot, after just over five months of patrolling service. The device was equipped with several cameras and a help button for travelers in the city's busiest subway station.

"I said it was a rubbish bin on wheels, but it looks like the wheels don't even work," says Albert Fox Cahn, executive director of anti-spy technology campaign group Surveillance Technology Oversight Project. New York Mayor Eric Adams has placed technology at the center of his policing strategy, extolling the virtues of drones, facial recognition cameras and robotics.