Knightscope’s clients also don’t know how much these security robots help. Since then Knightscope robots have become the crime-fighting friend of corporate clients in various cities nationwide, including Honolulu, Washington, D.C. and a community college in Tucson, Arizona. Part of that cost involves Knightscope storing all of the data that robots like Westy gather in a year. While some clients are buying more robots, the company’s overall number of clients fell to 23, from 30, in the past four years. For two years, a single Knightscope robot, dubbed “HP RoboCop,” has roamed part of the city’s Salt Lake Park.