Police departments are increasingly adopting policies that advise officers against disclosing the use of Automatic License Plate Recognition (ALPR) systems, like those from Flock Safety, when initiating traffic stops. This approach treats ALPR data as confidential investigative intelligence, allowing officers to withhold details about how a vehicle was identified. Critics warn this lack of transparency creates significant privacy risks, enabling pervasive tracking of individuals without their knowledge and leaving them unaware of the technology’s involvement in a stop. While law enforcement highlights ALPR’s utility in recovering stolen vehicles and finding missing persons, privacy advocates like the ACLU express deep concern over the potential for detailed movement tracking and its implications for civil liberties.