Police are not the biggest operator by site count
Most coverage of plate readers focuses on police departments. But when you count the cameras whose operator is actually recorded in the open dataset, two of the three largest operators in the United States are shops.
| Operator | Documented readers | Type |
|---|---|---|
| Flock Safety (operator field, vendor-managed) | 2,149 | Vendor |
| Lowe's | 1,773 | Retailer |
| The Home Depot | 1,158 | Retailer |
| NYC Department of Transportation | 594 | City agency |
| San Diego Police Department | 591 | Police |
| Detroit Police Department | 450 | Police |
| San Francisco Police Department | 418 | Police |
| California Highway Patrol | 402 | State police |
| Simon Property Group | 132 | Shopping centres |
Retailer figures merge spelling variants recorded by different volunteers ("Lowe's", "Lowes", "Lowe's Home Improvement"). Operator is recorded for only a minority of cameras, so every number here is a documented floor, not a total.
Why a hardware shop runs plate readers
The stated reason is organised retail theft. High-value, easily resold goods — power tools, copper wire, appliances — attract repeat offenders who arrive by vehicle. A reader at the car park entrance links a vehicle to a visit, and a vehicle seen at several incidents becomes a pattern.
That is a coherent security rationale. It also means a record is created for every customer who parks, not only for the small number involved in theft.
What is different about a private operator
This is the part worth understanding, because the rules are not the same.
- No public-records route. A police department is a public body subject to records law. A retailer is not. There is generally no request you can file to see what a shop's camera recorded about you.
- Policy instead of statute. Retention, access and sharing are governed by the company's own policy and its contract with the vendor, not by ALPR statutes written for police use.
- Sharing with police is possible. Private operators can grant law enforcement access to their reads, and some do. The practical result is a police-searchable record generated on private property with no public oversight of the camera's existence.
- No signage requirement in most places. You will usually not be told.
Where they sit
The pattern is consistent and easy to check once you know it. Readers go on the entrance and exit lanes of the car park, not on the building. In a store with two entrances off a main road, expect one at each. In a shopping centre, expect them on the centre's access roads rather than at each individual unit.
That placement means you are typically read on the way in and again on the way out, which establishes duration of visit as well as presence.
Checking a car park before you park
- Open the Map tab and search the shop or centre.
- Zoom to street level so the view cones appear. You will usually see them on the access lanes rather than in the parking area.
- Tap a pin — where a volunteer recorded it, the operator field will name the retailer rather than a police department.
- Use Area Stats to see the operator breakdown for the whole retail park at once.
The point is not to avoid shopping. It is that most people have no idea this category of camera exists at all, and the entrance to a DIY store is the last place they would look for one.
Know before you pass one.
Flock Camera draws a view cone on every camera with a recorded bearing and warns you before you pass one. Free, with no account.

Last reviewed 2026-08-15. Camera data © OpenStreetMap contributors (ODbL). Flock Camera is an independent project and is not affiliated with or endorsed by Flock Safety, Inc.