License Plate Giant Flock Safety Tightens Rules After Officers Used It to Stalk Women

A Crime-Fighting Tool Turned Surveillance Weapon

Flock Safety's nationwide network of automated license plate reader cameras — mounted along public roads — captures images of passing vehicles' plates, colors, and other characteristics to feed into a searchable database that police departments contract with the company to use, billed as a tool to help solve crimes. But a darker pattern has emerged from within law enforcement itself. An analysis of police and court records found at least 50 law enforcement officers charged with or accused of using license plate reader technology for unauthorized purposes — most of the cases involving surveillance of women.

Officers used Flock's system in 46 of those 50 cases, with the rest involving competing products. In 26 cases, investigators and prosecutors said officers used the technology to spy on wives, girlfriends, ex-partners, their exes' new partners, or women they wanted to meet. The abuses ranged from troubling to chilling. In Wisconsin, an officer allegedly used Flock to check whether his ex-girlfriend had visited an abortion clinic. In Kansas, a police chief who tracked his ex confronted her while she was with another man. In Florida, a deputy speeding to intercept a young actress he had added to a watch list nearly caused a head-on collision.

Flock's Response: New Rules With Real Teeth

Flock Safety — a surveillance technology company increasingly under scrutiny from lawmakers of both parties, civil liberties advocates, and citizens across the U.S. — announced on August 13 that it is making changes to its platform intended to quell privacy concerns and address documented abuses of its system by some members of law enforcement. The changes are significant on paper. Guardrails that were formerly optional will become mandatory by January 1. Among them: all law enforcement customers will have to implement an audit tool intended to flag abnormal search behavior, and when the system detects abnormal behavior, the user would be locked out pending an internal review.

Flock is also shortening the standard data retention window from 30 days to seven, though it will allow data to be preserved for longer when it is evidence tied to a case number. Case codes will be required for all law enforcement searches by the end of 2026, the company said. The logic is straightforward: if an officer has to attach a legitimate case number to every search, fishing expeditions for personal reasons become far harder to hide. The company also noted that 90% of searches occur within a week of a plate being scanned, making the shorter retention window a meaningful constraint without hampering most legitimate investigations.

Scale of the Network — and the Skepticism

The stakes of getting this right are enormous. Flock operates roughly 120,000 cameras across 49 states, with officers exploiting the network to track ex-partners and women without a warrant, case number, or active investigation. The company says its technology was involved in more than 1 million investigations and helped locate more than 10,000 missing people last year. Thousands of law enforcement agencies in 49 states can search and share Flock's data across jurisdictions to aid their investigations. And the reach extends beyond police: cameras are also operated by businesses, schools, homeowner associations, and private groups, creating a sprawling web of surveillance that most Americans drive through without realizing it.

Civil liberties groups aren't convinced the new measures go far enough. The ACLU welcomed Flock's decision to slash the recommended data retention period but said other changes were superficial or recycled versions of inadequate safety features, warning that the company appears to be "treating legitimate privacy concerns as mere public relations problems." Critics also point to a structural flaw that no policy tweak fully solves: as one attorney put it, "the fundamental problem with these systems is that they place private information about people's movements over time in the hands of every officer."

What Comes Next

State lawmakers are also moving. Pennsylvania Representative Tarik Khan is circulating proposed legislation that would create guidelines to make sure the technology isn't used to track innocent people. Similar efforts are underway in other states, reflecting a growing bipartisan unease with how much power these systems hand to individual officers with minimal oversight. The Institute for Justice, which tracks documented license plate reader stalking cases and is representing plaintiffs challenging networks in San Jose and Norfolk, has described its case tracker as "almost certainly an undercount."

Flock's new rules are a meaningful step — mandatory audits and case codes are harder to game than voluntary ones. But the company's credibility now depends on enforcement. Technology that captures 20 billion plate scans every month, spread across a network touching nearly every state, demands more than a policy update. It demands a fundamental reckoning with who watches the watchers, and what happens when the answer turns out to be: no one.