>Police departments are telling officers not to mention ALPRs when stopping vehicles and concealing their use of ALPRs to avoid citizens’ public records requests. [...] 404 Media recently revealed that in its usage policy for Flock ALPR cameras, one county in Iowa tells police to keep them a secret when detaining people: “DO NOT MENTION ALPR USAGE TO THE OCCUPANTS OF THE VEHICLE,” the policy document reads. “DO NOT MENTION ALPR USAGE IN YOUR REPORT OR COMPLAINT UNLESS ABSOLUTELY NECESSARY.” If writing a report about an incident, police are told to say they used “county resources” in making a stop instead of acknowledging use of ALPRs.
>AT&T built a powerful phone surveillance tool for police, called Hemisphere, in the mid 2000s, and the company required agencies not to use evidence gathered by Hemisphere in court unless there was no other admissible evidence. If evidence obtained through Hemisphere was used, police were required to recreate it through a traditional subpoena, a process they called “parallel construction.” We called it “evidence laundering.”
>In Baltimore a judge concluded that law enforcement had used a standard pen register order to intentionally hide its use of a Stingray from the court in violation of its legal disclosure obligations, leading to a landmark 2015 privacy ruling that cops need a warrant to use the device. [...] Prosecutors have accepted plea deals to hide their use of cell-site simulators and have even dropped cases rather than reveal information about their use of the technology. U.S. Marshalls have driven files hundreds of miles to thwart public records requests.