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By Amanda Greenwood
Associate News Editor
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Flock Safety operates a network of automated license plate reader (ALPR) cameras installed on roads, intersections, and neighborhood entrances.
That information can then be searched by participating law enforcement agencies.
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Supporters argue the system has become an important investigative tool. Law enforcement agencies around the country have credited Flock cameras with helping identify suspects, recover stolen vehicles, and generate leads in criminal investigations.
Those benefits have helped fuel the company's rapid growth, with Flock cameras now operating in thousands of communities nationwide. Anti-surveillance group DeFlock says it has mapped over 122,000 license plate reader cameras nationwide.
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Why Are Flock Cameras So Controversial?
The controversy stems from the same feature supporters praise most: the ability to track where vehicles have been.
Critics argue that while a single camera may capture only a momentary snapshot, a network of cameras can create a detailed record of someone's movements over time. Privacy advocates warn that such systems could reveal where people live, work, worship, seek medical treatment or attend political events.
The debate has intensified as opposition to Flock cameras has spread beyond traditional privacy groups.
Several communities around the country have rejected proposed Flock camera deployments or removed existing camera networks amid concerns about surveillance and civil liberties.
At the same time, some Republican lawmakers have pushed legislation to restrict or more closely regulate automated license plate reader technology, arguing that its growing use has transformed it into a broad surveillance tool that could threaten privacy rights and constitutional protections, including those guaranteed by the Fourth Amendment.
Questions have also emerged about potential misuse of the system.
Multiple officers in different jurisdictions have faced allegations of improperly accessing license plate reader databases, prompting critics to argue that safeguards designed to prevent abuse may not always work as intended.
At the same time, supporters contend that isolated misuse cases shouldn’t overshadow the technology's role in solving crimes. They argue that stronger oversight, auditing and access controls can address abuse without eliminating a tool that many departments consider effective.
That clash between public safety and privacy has become the defining issue surrounding Flock cameras.
What Does the Fourth Amendment Say?
The constitutional debate centers on the Fourth Amendment, which protects Americans against "unreasonable searches and seizures."
Historically, courts have generally ruled that people have no reasonable expectation of privacy in information exposed to public view. Since license plates are displayed openly on public roads, courts have often found that recording a license plate is not, by itself, a Fourth Amendment search.
Supporters of Flock cameras rely heavily on that principle.
Critics, however, argue that modern surveillance technology fundamentally changes the equation. They say the issue isn’t whether or not the police can observe a car on a public street, but whether the government can collect millions of observations and combine them into a searchable database capable of reconstructing a person's movements and daily routines.
That argument draws heavily on the Supreme Court's 2018 decision in Carpenter v. United States, in which the Court found that although cellphone location records are held by wireless carriers, they can reveal so much about a person's daily life that individuals still have a reasonable expectation of privacy in that information.
Privacy advocates contend that large-scale ALPR systems raise many of the same concerns because they can reveal long-term patterns of movement and association.
Are Flock Cameras Unconstitutional?
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So far, no court has definitively ruled that Flock cameras are unconstitutional.
The most significant legal challenge is Schmidt v. City of Norfolk, a case involving Norfolk, Virginia's citywide Flock camera network. Plaintiffs argued that collecting and storing location information from thousands of drivers constituted a warrantless search in violation of the Fourth Amendment.
In January 2026, a federal judge ruled for the city, finding that Norfolk's use of the cameras did not violate the Constitution. The judge concluded that the system didn’t track the entirety of a person's movements and largely relied on information observable on public roadways.
The case is now on appeal, but this could be one of the most important tests of how constitutional privacy protections apply to modern surveillance technology.
FlockHopper and the Wider Surveillance Debate
The controversy has also spawned tools and activist projects designed to expose the scale of the Flock camera network.
FlockHopper is among the efforts intended to demonstrate how interconnected ALPR systems can be used to search vehicle information across jurisdictions.
Privacy advocates say such projects help illustrate how surveillance networks operate and how vehicle data can potentially be accessed by agencies far from where it was originally collected. Supporters argue that information sharing is essential for investigating crimes that cross city and state lines.
A Constitutional Test for the Digital Age
The battle over Flock cameras is ultimately about more than just license plates.
Supporters see a technology that has helped police departments identify suspects and solve crimes. Critics see a growing surveillance infrastructure that records the movements of millions of Americans who are not suspected of wrongdoing.
Courts have long held that people generally lack a privacy interest in what can be observed on a public roadway.
What remains unresolved is whether collecting those observations at scale, storing them for weeks or months, and allowing them to be searched across jurisdictions creates something fundamentally different.
That question is now working its way through the courts, legislatures, and city councils across the country. The answer could help define how the Fourth Amendment applies to the next generation of surveillance technology.
Newsweek has reached out, via email, to Flock Safety and to one of the nation's leading Fourth Amendment scholars, Orin Kerr, a Professor at Stanford Law School for comment.
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