It looks like street furniture. A small black camera mounted on a pole, a solar panel, a utility box. Nothing dramatic. No warrant presented to the driver passing beneath it. In many communities, there was barely any public debate before it appeared. Yet that unremarkable device photographs nearly every vehicle that passes, reads the license plate, records the time and location, identifies the make, model and color, and may catalogue distinctive features such as bumper stickers, roof racks, dents, scratches and damage. That information is then uploaded into a cloud platform where police can search for vehicles across time and geography.

This is the Flock Safety business model: a privately administered ledger of American movement, sold to local governments one subscription contract at a time. And it is quietly rendering one of the Constitution’s most fundamental protections functionally obsolete — not through legislation, not through a court ruling, but through a procurement process.

From Neighborhood Watch to National Tracking Network

Flock Safety was founded in Atlanta in 2017 by Garrett Langley, Matt Feury and Paige Todd. The company’s early systems were marketed to homeowners associations as a smarter version of neighborhood watch. But there was a critical distinction from the beginning. Traditional neighborhood watch involved residents observing suspicious behavior. Flock’s model recorded everybody first and searched for suspicious people later.

That inversion became the foundation of the company’s expansion. Instead of beginning with an identified crime and gathering evidence about a particular suspect, Flock created a system in which the movements of thousands of innocent people are collected continuously, stored, and searched only after an investigation commences. Police no longer need to identify a suspect before surveillance begins. The database is already waiting.

Flock has since expanded beyond residential subdivisions into apartment complexes, schools, hospitals, retailers, corporate campuses and municipal roads, marketing interconnected camera, audio, drone and investigative systems to police agencies, businesses and private communities. According to the American Civil Liberties Union, between 80,000 and 100,000 Flock cameras are currently installed across the United States, in both urban and rural areas, on highways, in neighborhoods, and outside local businesses. The ACLU also notes that fewer than one percent of vehicles scanned by these systems are connected to any crime or wrongdoing.

The Architecture of a Public-Private Surveillance Regime

Flock Safety is not alone in this market. Axon, Vigilant Solutions (a subsidiary of Motorola Solutions), Genetec, PlateSmart, Innova Systems, Rekor, ELSAG, Perceptics and Jenoptik are among the other companies selling automated license plate reader (ALPR) systems to police departments, private companies and other entities.

What makes this regime structurally significant is its architecture. Corporations collect the data. Venture capital finances the infrastructure. Local governments purchase access. Federal agencies find side doors into the system. And citizens are told that none of this requires a warrant because they were technically visible while driving on a public road.

Flock’s own legal white paper argues that its ALPR system is consistent with the Fourth Amendment because license plates are government-issued identifiers intended to be publicly visible, the cameras create discrete point-in-time observations rather than continuous tracking, and courts in the Ninth and Eleventh Circuits have found that fixed-location ALPRs do not require a warrant. The company also notes it imposes a standard 30-day data retention limit and encryption protocols.

But critics argue that these technical distinctions obscure the operational reality. The ACLU notes that data from any Flock camera can be searched by any law enforcement agency holding a Flock contract, with few regulations or oversight governing how agencies use what they find. A network of 80,000 to 100,000 cameras, each recording every passing vehicle and pooling that data into a shared platform, functions differently in practice than a single fixed camera at a single intersection — even if individual captures are technically discrete.

Documented Abuses Already on the Record

The theoretical concerns are not hypothetical. Documented cases of misuse are already accumulating.

According to the ACLU, Immigration and Customs Enforcement and Customs and Border Protection have repeatedly used Flock to pursue immigrants without warrants. Kansas police used ALPR data to pursue a man who had written a critical op-ed about the department. A Colorado police officer wrongfully accused a woman of theft based on a Flock alert and then declined to examine evidence establishing her innocence. A mother and her children were held at gunpoint because ALPR cameras wrongly flagged their vehicle as stolen.

The ACLU also reports that one in ten license plates scanned by Flock cameras results in the state of the plate being misread — a significant error rate for a technology being used to make real-time enforcement decisions.

The implications extend beyond individual errors. As the ACLU observes, a comprehensive record of a person’s vehicle movements could reveal which doctors they visit, which houses of worship they attend, which political meetings or protests they participate in, and who they associate with. The data does not need to be accessed maliciously to become an instrument of social control. Its mere existence, and the knowledge that it exists, shapes behavior.

The Legal Landscape Is Shifting

Courts have not reached consensus on ALPR technology’s constitutional status, and litigation is expanding on multiple fronts.

As the law firm Seyfarth Shaw documented in a June 2026 legal update, disputes over ALPR technology are increasingly shifting away from public safety arguments toward questions about whether businesses and governments adequately disclose their use of these systems and implement proper data safeguards. In California, a state appellate court ruled in Bartholomew v. Parking Concepts, Inc. that using ALPR technology without a publicly disclosed privacy policy violates an individual’s right to know about data collection — a ruling sufficient on its own to establish legal harm under the state’s ALPR Privacy Act, which provides for $2,500 in damages per violation. The decision has triggered a surge in class action litigation against retailers, parking operators and other commercial ALPR users.

At the government level, California’s Attorney General has pursued litigation against the City of El Cajon over the unlawful sharing of ALPR data with out-of-state and federal law enforcement agencies — raising questions about the boundaries of intergovernmental data sharing that Flock’s network architecture inherently enables.

Flock’s own white paper acknowledges that a Virginia state court concluded in Commonwealth v. Bell that ALPR use without a warrant does violate the Fourth Amendment, though the company notes this decision was subsequently rejected by the Virginia Court of Appeals and other courts. The fact that a court reached that conclusion at all signals that the constitutional debate is far from settled.

Communities Are Pushing Back

In response to mounting concern, the ACLU has launched a campaign called “Get the Flock Out,” providing local advocacy toolkits, model legislation and a model resolution for municipal contract cancellation. The organization reports that cities and police departments have already canceled Flock contracts in response to public pressure, and ACLU affiliates are actively supporting legislation in multiple states to impose data retention limits, transparency requirements and restrictions on data sharing with federal agencies.

The ACLU’s model bill for local governments addresses data retention windows, mandatory public disclosure of ALPR deployments, restrictions on who can query the database and under what circumstances, and accountability mechanisms for misuse. These are the regulatory guardrails that the current commercial rollout largely lacks.

The Structural Problem No Upgrade Can Fix

Flock Safety and its competitors did not repeal the Fourth Amendment. They made it economically and technically irrelevant for a specific and expanding category of government surveillance. The warrant requirement exists because the founders understood that unchecked government power to monitor citizens would chill the freedoms that constitutional government is meant to protect. The mechanism by which that monitoring now occurs — a private company’s subscription dashboard, a municipal procurement line item, a cloud platform accessible to any contracting agency — does not change what the monitoring is.

The government once needed detectives, informants, stakeouts and court orders to construct a record of a person’s movements across a city. Now it can type a plate number into a privately operated interface and retrieve that record from a database that was continuously compiled whether or not any investigation had begun.

The constitutional question was never solely about the technology. It was always about power: who holds it, under what constraints, with what accountability. Those questions are not resolved by a 30-day data retention policy or a terms-of-service agreement. They require democratic deliberation, legislative action and judicial scrutiny equal to the scale of what is being built — before the infrastructure becomes too embedded to meaningfully challenge.

This article draws on reporting from Activist Post, American Civil Liberties Union, Flock Safety, and Seyfarth Shaw.