
ALPR, explained — how a 1976 stolen-car tool became a warrantless record of where everyone goes
We put together a plain-English explainer on automated license-plate readers (ALPR) — the kind of thing you can send to a neighbor or a commissioner who says "it's just a license plate reader."
It covers, with sources:
- The history (invented 1976, UK; first arrest 1981)
- Who uses them — police, but also the repossession/insurance industry (DRN/Vigilant, now Motorola), which runs its own nationwide network of 9B+ plate images and sells the data
- When AI got added (late 2010s "vehicle fingerprinting")
- When it moved from plates to people — Flock's own 2022 patent describes recognizing a named person and searching by face
- How many are in NC (DeFlock map: 2,800+, ~85% Flock — a floor)
- Whether the systems integrate (yes — see US v. Kyle, where one query returned a month of movements across states)
It also includes a quote from a Brunswick County commissioner who was told Motorola's cameras can flag whether someone is armed — then defended them as "like an officer running a tag."