Clayton Burnett seems like an unlikely candidate to run a cutting-edge surveillance system. He is not an FBI agent, nor does he investigate homicides for the NYPD. Burnett is the director of innovation and new technology at Watchtower Security, a private company that contracts with property managers—hundreds of them—in low-income communities across the U.S. About three years ago, his company started contracting with OpenALPR, a startup whose software lets users track people by their license plates. “The price point was very reasonable for us,” Burnett says, so now Watchtower has more than 475 cameras scattered across its properties—he says they sometimes scan more than 1.5 million license plates in a week. With just a quick search, now Watchtower can see every time someone passed by one of its apartment complexes in the past two months.