Nationwide License-Plate Camera Network Became a Stalking Tool, Report Shows

A Public Safety Pitch, With a Hidden Price

It was marketed as the future of crime fighting: a network of small, solar-powered cameras mounted on light poles and street signs, reading every license plate that passes, logging the time, location, and direction of travel for millions of vehicles. Flock Safety, the Atlanta-based company behind the technology, now runs cameras in over 4,000 U.S. communities, and its data is routinely shared with local police, sheriffs' offices, and federal agencies. Detectives have used it to recover stolen cars, find missing children, and solve hit-and-run cases — a pitch so effective that the company has become a fixture of modern American policing.

But a review of internal records and court filings tells a far less flattering story. Over the course of roughly three years, at least 200 sworn officers and civilian employees with access to the network used it for reasons that had nothing to do with public safety. Instead, they ran the plates of former partners, romantic rivals, estranged spouses, judges, and journalists. In some cases, the searches were used to follow an ex-lover's daily route; in others, they provided a cover for monitoring a personal enemy. The findings, assembled from audit logs obtained through public records requests, are among the most detailed evidence yet that the same tools built to catch criminals can be quietly repurposed by the people entrusted with enforcing the law.

When the Hunter Becomes the Stalker

The cases documented in the investigation share a striking pattern: officers who have grown so comfortable with surveillance technology that they no longer distinguish between a police database and a personal search engine. In one instance, a Tennessee officer repeatedly ran the plate of a woman he had been romantically involved with, checking her location dozens of times over several months. In another, a Louisiana deputy pulled the plate of a sitting judge who had ruled against him in a custody dispute, apparently to learn where the judge lived and how she traveled to work. A third case involved an Arizona officer who passed along a plate number to a civilian friend facing a financial dispute, effectively handing a private citizen the power to trace an innocent person's movements.

The actual number of abuses may be far higher. Audit logs capture every query, but they do not always capture intent. Investigators noted that many officers learned to disguise their searches as legitimate police work, typing notations into the system like "checking for stolen vehicle" or "suspicious vehicle in area" when the underlying purpose was personal. The reports also found instances of officers borrowing colleagues' login credentials, while others conducted "pretextual searches" for family members and friends. Taken together, the documents describe a workforce that received little training on the privacy rules governing the database, and even less supervision.

The Audit Trail That Didn't Stop Abuse

Flock Safety's defenders point out that the company did what many of its competitors would not: it built an audit trail. Every search is logged, every user is identified, and the company conducts periodic reviews for suspicious behavior. When its internal team flagged the patterns of misuse — repeated queries on a single plate outside of normal shift hours, searches on plates linked to judges and journalists — Flock responded by deactivating the accounts, alerting the officers' departments, and, in several cases, assisting in criminal investigations.

Yet the very existence of that audit system reveals a deeper problem. Flock's own records show that the company was aware of the risk of stalking before the cases came to light. Marketing materials and engineering blog posts describe "privacy filters" and "accountability features" designed to prevent exactly these kinds of abuse. But a filter is only as strong as the culture that enforces it. Officers who had been trusted with the network for years understood how to work around the safeguards, or simply assumed nobody would notice a few extra queries. The result is a system that is not broken in a technical sense but failed in a human one — a failure baked into the design of nearly every mass surveillance network: the assumption that the people holding the keys will behave.

The Company's Response and the Limits of Self-Policing

In response to the investigation, Flock Safety issued a statement emphasizing that the company has "zero tolerance" for misuse and that the offending users represented a "tiny fraction" of the more than 100,000 officers with access to the platform. The company said it had strengthened its review processes, added two-factor authentication, and required users to select a "reason for search" before a query is processed. It has also barred officers from searching the plates of their own family members, judges, and public officials unless the search is part of an active, documented case.

But privacy advocates argue that self-policing is not enough. "The problem is structural," said one civil liberties attorney who has studied automated license plate readers. "When you give police a database of everyone's movements, and the only enforcement mechanism is the same agency that benefits from the database, abuse is inevitable. You see this in every jurisdiction that has deployed these systems — the questions are only how often, and how quickly it gets uncovered." The attorney noted that most states have no laws restricting how long license plate data may be retained, and many police departments share the data with dozens of other agencies, expanding the circle of potential misusers far beyond the original camera locations.

A Regulatory Vacuum

The Flock network is not the only one with this problem. Automated license plate readers have been deployed across the U.S. since the early 2000s, but federal law has never squarely addressed them. Courts have generally held that drivers have no reasonable expectation of privacy in a license plate displayed in public, and the "third-party doctrine" — the idea that information shared with a company like Flock is not protected — has left the door open for warrantless access. Congress has held hearings, and several bills have been introduced to require warrants for ALPR searches and mandate transparency reports, but none have passed. A handful of states, including Vermont and New Hampshire, have restricted data retention, and some cities have banned the cameras outright, but those measures are the exception rather than the norm.

Meanwhile, the industry is expanding. Flock now sells not only cameras but also gunshot detection sensors and software that combines license plate data with other surveillance feeds. The company has pitched its technology to school districts, homeowners' associations, and private businesses, creating a dataset that is no longer confined to police use. Each new installation increases the number of people who can, in theory, look up where your car was at 11 p.m. on a Tuesday.

What Happens Next

For the officers named in the investigation, the consequences have been severe. Several were fired; others resigned before disciplinary hearings. At least two face criminal charges related to harassment or stalking. But the cases have also triggered a broader reckoning within law enforcement. Several police departments have announced they will conduct full audits of their own ALPR usage, and some have suspended the practice of allowing officers to run plates on their personal phones. The firm has promised its new audit tools will flag "high-risk searches" in real time and automatically report them to a second layer of supervisors.

Still, the underlying tension remains unresolved: how to capture the undeniable benefits of a nationwide camera network while preventing the people behind the blue line from abusing it. The technology itself is neither good nor evil — it is a tool for surveillance, and like every tool, its value depends on who wields it. But the records from this investigation suggest that the guardrails designed to stop stalking were always thinner than the company's marketing implied, and that the public has been largely left in the dark. Until meaningful oversight, independent audits, and enforceable penalties exist, the camera might be watching not just for criminals — but for the personal grudges of those tasked with keeping the peace.