"Ryan Calo, a professor at the University of Washington who’s a leading expert on the intersection of robots and law, said making law enforcement agencies draft policies about how and when they can use robots and drones forces them to think through scenarios in advance. “If you want to put a Taser on a drone and tase a mentally ill person,” Calo said, “or if you want to follow someone around with a drone, that’s where you need to have a process in place that you’ve properly vetted with the leadership.”"