Police Departments Obscure Surveillance Tool Use to Evade Public Accountability

Surveillance tools have become standard equipment for police departments nationwide, including automated license plate readers (ALPR), cell-site simulators, and facial recognition systems. Communities across the country have voiced legitimate concerns about how these technologies threaten privacy rights and civil liberties. Rather than addressing these concerns transparently, many law enforcement agencies are instead taking steps to obscure their surveillance practices.

Officers are being instructed to avoid disclosing ALPR usage during vehicle stops and are suppressing documentation of these tools to circumvent public records requests. While law enforcement has concealed surveillance tactics for decades, the practice remains fundamentally problematic. Secrecy prevents taxpayers from understanding how their money funds surveillance systems and prevents meaningful accountability. The situation grows more urgent as municipalities enter contracts with vendors like Flock with minimal public input. This opacity also undermines legal protections: it allows authorities to withhold methods from judges and denies defendants the ability to contest evidence derived from surveillance technology.

404 Media uncovered a policy from an Iowa county directing officers to conceal Flock ALPR usage. The directive stated: "DO NOT MENTION ALPR USAGE TO THE OCCUPANTS OF THE VEHICLE," and "DO NOT MENTION ALPR USAGE IN YOUR REPORT OR COMPLAINT UNLESS ABSOLUTELY NECESSARY." Officers were instructed to reference "county resources" instead of acknowledging ALPR deployment when documenting stops.

Houston police face similar directives requiring them to "be as vague as permissible" regarding Flock deployment, since searches within the surveillance platform could be disclosed through public records requests.

Public concern about ALPR technology has intensified following reports of misuse, including instances where officers employed the systems to monitor former partners. Several municipalities have disabled the cameras entirely, while others have terminated ALPR contracts. Two states have recently abandoned ALPR programs. Law enforcement agencies recognize this trend and view concealment of Flock and comparable systems as a mechanism for avoiding public examination and negative media coverage.

Surveillance concealment by police and technology vendors extends well beyond recent ALPR controversies. AT&T developed Hemisphere, a sophisticated phone surveillance platform for law enforcement, during the mid-2000s. The company mandated that agencies refrain from presenting Hemisphere-derived evidence in court unless no alternative evidence existed. When such evidence was introduced, police were required to obtain it independently through traditional subpoenas—a process authorities termed "parallel construction."

Cell-site simulators, commonly called stingrays, have been subject to similar concealment efforts. These devices intercept cell phone signals, redirecting connections away from legitimate towers to obtain location information. Police have obtained location data without warrants by misusing basic pen register orders—court authorizations designed for call log data that do not require probable cause demonstration.

Baltimore courts identified a significant violation when a judge determined that law enforcement had deliberately concealed stingray deployment through a standard pen register order, breaching disclosure requirements. This led to a landmark 2015 ruling establishing that warrant authorization is necessary for stingray deployment. Despite this precedent, police have persisted in concealing stingray usage. Prosecutors have accepted plea agreements to shield information about cell-site simulator deployment and have abandoned prosecutions rather than disclose technology details. U.S. Marshalls have transported files across hundreds of miles to obstruct public records requests.

Transparency regarding surveillance technology deployment remains a priority. Collaboration with privacy organizations and grassroots groups aims to educate the public about existing and emerging surveillance systems threatening civil liberties. Policymakers and legislators are being urged to strengthen restrictions on warrantless mass surveillance and prevent its expansion.

The EFF's Atlas of Surveillance database allows residents to investigate whether their local police maintain contracts for ALPR systems or other surveillance infrastructure.

Source: Electronic Frontier Foundation (Deeplinks / Updates)