For Last Week Tonight with John Oliver watchers, police surveillance technology was a topic discussed in Sunday’s episode. For those who didn’t tune in, allow us to give you a rundown of some of the surveillance tech you may have NO CLUE is all around you. CamerasWe’d be hard pressed to learn of anyone who ISN’T aware of cameras being used by police departments to aid in investigations. Enter: ShotSpotter, tech that alerts authorities if it senses loud noises that could be gunshots. Learn more about the dangers of Flock tech from a former cop (below):Cell-Site SimulatorsNow this tech is just downright DUBIOUS.