, Senior Policy Analyst, ACLU Speech, Privacy, and Technology Project July 23, 2025 The police surveillance company Flock has built an enormous nationwide license plate tracking system, which streams records of Americans’ comings and goings into a private national database that it makes available to police officers around the country. The system allows police to search the nationwide movement records of any vehicle that comes to their attention. That’s bad enough on its own, but the company is a...