Should cities use automated license plate cameras like Flock?
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What this question is about
Automated license plate readers are cameras, usually on poles, that photograph every passing car and log its plate, the time and the place. Police can search those records later and get an alert when a car on a hot list (stolen, wanted, Amber Alert) drives past. Flock Safety, the biggest vendor in the US, says its cameras are used in more than 5,000 communities, and by default it keeps the data for 7 to 30 days.
In 2026 the cameras became a national fight. Dozens of cities canceled or rejected Flock contracts, often after learning that other agencies, including federal immigration officers, could search their data. Police chiefs answer that the cameras solve murders, find missing people and recover stolen cars. Courts are split: a federal judge upheld Norfolk's 176 cameras in January, while a federal court in Oklahoma ruled in October that searching a car's 30 day travel history without a warrant violated the Fourth Amendment. Research on whether the cameras reduce crime is still thin.
The question is whether cities should use these cameras at all, and if so under what rules.
Positions
4 positions, in no order of merit. Each shows its strongest reasons and the strongest objection to them.
As in New Hampshire: cameras check plates against lists of stolen cars and wanted or missing people, and every plate without a match is destroyed within three minutes, so no searchable travel history exists.
Since 2016 New Hampshire has required plates without a match to be purged within three minutes, which leaves no database of past locations to search.
1 source
Objection from Yes, cities should keep and expand license plate cameras.
Many cases are solved by looking back, not by live alerts.
The October Oklahoma ruling objected to a 30 day log of a car's movements, which an alerts only system never builds.
1 source
New Hampshire's law passed with bipartisan support a decade ago and has largely kept searchable camera networks out of the state.
1 source
Police keep using searchable plate camera networks under current law, with the vendor's default retention and data sharing between agencies.
The Jacksonville Sheriff's Office says plate readers helped solve 15 murders, 17 kidnappings, nearly 100 shootings and 172 missing persons cases in two years.
1 source
Scottsdale's police chief credits the cameras with locating five vulnerable adults this year, alongside recovering hundreds of stolen vehicles.
1 source
In January 2026 a federal judge ruled that Norfolk's 176 Flock cameras do not violate the Fourth Amendment.
1 source
Cameras stay, but a state law caps how long data is kept, bans sharing outside the state or for immigration enforcement, requires a case number for every search and makes the audit logs public.
Many cities with Flock contracts learned they had been sharing their data nationally without realizing it, in some cases with federal agencies.
1 source
Objection from No, cities should end mass license plate tracking.
Rules on paper did not stop the sharing.
After new laws in California, Illinois and Virginia, Flock stopped agencies elsewhere from searching cameras in those states.
1 source
Virginia limits plate readers to purposes like missing or wanted persons, human trafficking and in-state criminal investigations, and Richmond police still cite abductions and homicides solved with them.
1 source
Cancel the contracts and delete the stored data.
In October a federal court in Oklahoma ruled that pulling a car's 30 day travel history, with more than 50 sightings across several states, was a search that needed a warrant.
1 source
Objection from Yes, cities should keep and expand license plate cameras.
Courts are split, not settled.
Search logs obtained by 404 Media showed local and state police running Flock lookups for immigration reasons, often as informal favors to federal agents.
1 source
Surprise, Arizona canceled its Flock contract after an officer was put on leave over suspected misuse of the plate readers.
1 source
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Show 5 open questions+−
Nobody has objected yet · Yes, cities should keep and expand license plate cameras.
Police credit the cameras with solving serious crimes.
Nobody has objected yet · Allow only live hot list alerts, and delete every other scan within minutes.
The constitutional problem is the stored history.
Nobody has objected yet · Keep them, but only under strict state rules on retention, sharing and audits.
State rules can be enforced.
Nobody has objected yet · No, cities should end mass license plate tracking.
Local data ends up serving federal immigration enforcement.
Nobody has objected yet · Yes, cities should keep and expand license plate cameras.
They find missing and vulnerable people quickly.
All 17 sources used on this page+−
- New Hampshire RSA 261:75-b, number plate scanning devicesgc.nh.gov
- AP via Washington Times: NH House kills license plate scanner billtwt-assets.washtimes.com
- Lawfare: Courts are striking down warrantless Flock camera uselawfaremedia.org
- News From The States: As states seek to rein in Flock cameras, New Hampshire is considered a modelnewsfromthestates.com
- News4JAX: JSO defends Flock cameras, cites murders solved (Aug 2026)news4jax.com
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