What Automatic License Plate Reader Companies Actually Do

An automatic license plate reader (ALPR) is a camera system that photographs passing vehicles, uses optical character recognition to extract the plate number, and logs that data with a timestamp, GPS location, and often a vehicle description. The companies behind these systems sell cameras, software, and cloud databases to police departments, homeowners associations, parking operators, and private businesses. A single camera can capture tens of thousands of plates per day, and the data is typically retained for 30 days or longer depending on the customer's policy.

What makes ALPRs controversial isn't the hardware — it's the networked database behind it. When thousands of cameras share one back-end, a search for a plate returns a nationwide movement history in seconds. That's useful for finding a stolen car or an Amber Alert suspect, but the same tool can track anyone who drives.

The Major Automatic License Plate Reader Companies in 2026

The ALPR market has consolidated around a handful of large vendors, each with a different customer base and business model.

Flock Safety

Flock Safety is the fastest-growing name in the industry and now operates in more than 5,000 U.S. communities. Its solar-powered, cellular-connected cameras are marketed heavily to police departments and HOAs, with a subscription model that runs roughly $2,500–$3,000 per camera per year. Flock's shared network — the Flock Safety LPR network — lets subscribed agencies query one another's data, which is why a plate scanned in Georgia can show up in a search run from Arizona. Many of the FOIA-released scan records surfaced on PlateQuery come from Flock-equipped agencies.

Motorola Solutions (Vigilant Solutions)

Motorola acquired Vigilant Solutions in 2019 and folded it into its public-safety portfolio. Vigilant's commercial database, LEARN, draws plate reads from repossession agencies and towing companies, giving law enforcement access to billions of historical scans separate from government-owned cameras. It's one of the oldest and largest commercial ALPR datasets in existence.

Rekor Systems

Rekor focuses on software rather than hardware. Its platform turns existing traffic cameras, toll gantries, and dash cams into plate readers, and it supplies several state transportation departments with uninsured-motorist detection systems. Oklahoma was an early high-profile customer.

Genetec AutoVu

Genetec, a Canadian company, sells AutoVu to parking operators, airports, and municipalities. It's heavy in the private-sector parking enforcement space — the camera that reads your plate as you pull into an airport garage is often an AutoVu unit.

Leonardo ELSAG

ELSAG, owned by Italian defense contractor Leonardo, builds the mobile ALPR units mounted on police cruiser trunks. If you've seen a patrol car with four small cameras pointed outward, you've probably seen ELSAG hardware.

Neology, PlateSmart, and Jenoptik

These vendors round out the market in tolling, border crossings, and traffic enforcement. Jenoptik's cameras run many European speed and red-light systems and are expanding in the U.S.

How ALPR Data Gets Shared Between Companies and Agencies

Most people assume a camera in their neighborhood only feeds the local police department. In reality, data flows through regional and national sharing agreements. A Flock camera owned by a Texas HOA may be queryable by a sheriff's deputy in Illinois if both are opted into the national lookup network. Motorola's commercial database is sold access by subscription, meaning a federal agency can query reads collected by a private repo company years earlier.

This is why transparency matters. In 2023, Illinois passed Senate Bill 1503 (the Expressway Camera Act) requiring auditability of ALPR access, and California's Civil Code §1798.90.5 — part of SB 34, in effect since 2016 — requires ALPR operators to post a public usage and privacy policy and limit data retention. California AG opinions have also warned local agencies against sharing ALPR data with out-of-state or federal immigration authorities. Enforcement is uneven, but these statutes at least give the public a legal hook to request records.

What ALPR Companies Collect About Your Vehicle

A single plate read typically includes:

  • The plate number and state
  • A full-color image of the vehicle, often including the driver and passengers
  • GPS coordinates of the camera
  • Timestamp down to the second
  • Vehicle make, model, and color (inferred by AI)
  • Sometimes bumper stickers, roof racks, or damage, used for "vehicle fingerprinting"

Flock markets vehicle fingerprinting as a way to find a car even when a plate is covered or swapped. That's useful for police — and alarming for anyone who hasn't consented to being tracked by their roof rack.

How to Find Out If Your Plate Has Been Scanned

Here's where things get practical. Many ALPR records are public under state FOIA laws, especially when the camera is operated by a government agency. Civil liberties groups and journalists routinely file public-records requests for scan logs, and the resulting datasets include plates, timestamps, and camera locations.

PlateQuery aggregates these FOIA-released ALPR records into a free, searchable history on every plate's page. You can type in your own plate, see when and which agency's Flock camera network recorded it, and get a concrete answer to the question "am I being tracked?" It's not a leak and it's not hacking — it's the same data a reporter could get by filing a records request, just already assembled.

Frequently Asked Questions

Are automatic license plate readers legal?

Yes, in all 50 states, though a growing number regulate retention periods and data sharing. New Hampshire is the strictest, generally prohibiting government ALPR use under RSA 236:130 with narrow exceptions. California, Vermont, and Maine impose retention and transparency rules.

How long do ALPR companies keep my plate data?

It varies by customer policy. Flock defaults to 30 days. Motorola's commercial LEARN database retains reads for years. Agencies with longer investigative retention policies may keep data 1–5 years.

Can I opt out of being scanned by ALPR cameras?

Not really. The cameras photograph every passing vehicle automatically. You can, however, see what's already been recorded about your plate and claim your plate on PlateQuery to control who sees that history going forward.

Which ALPR company has the most cameras?

Flock Safety is the largest by camera count in the U.S., with deployments in over 5,000 communities as of 2026. Motorola/Vigilant has the largest historical commercial database.

The Practical Takeaway

The automatic license plate reader industry has grown faster than the laws regulating it, and the typical driver has no idea how often their vehicle is logged. You don't have to accept that information asymmetry. Search your plate on PlateQuery for free to see which agencies' ALPR networks have recorded it and when. If you'd rather that scan history and any messages tied to your plate stay private, open your plate's page while signed in and click Claim Ownership — a Stripe subscription at about $1.99/month or $11.99/year hides the ALPR history and inbox from the public, leaving them visible only to you. It's a small step toward balancing the scales with the companies watching your car.