The Rise and Controversy of Automated License Plate Readers

The use of automated license plate readers (ALPRs), such as those from Flock and other manufacturers, has sparked significant debate across the U.S. These devices are designed to capture data like vehicle license plates, make, model, and color. Flock claims its technology can detect vehicles moving at speeds up to 100 MPH from a distance of 75 feet, day or night. It can also identify specific details like whether a vehicle belongs to a resident, the type of plate it has, and any visible damages.

While Flock cannot measure vehicle speed, Genetec’s ALPR system can estimate it. Motorola Solutions, capturing about 5% of ALPR locations tracked by the DeFlock project, offers technology that can recognize vehicle accessories and unique features such as damage or bumper stickers. Flock devices capture images of vehicle rears on public roads, thus only documenting those that pass directly in front of them.

For individuals interested in locating nearby ALPRs, DeFlock provides a crowd-sourced map. The map’s data is sourced from volunteers and the OpenStreetMap community rather than from private or governmental entities. However, Nexstar has noted it cannot independently verify these locations.

The Department of Homeland Security reports that ALPRs have been in use for over two decades. These devices are found on poles, streetlights, overpasses, and in mobile formats as well. They scan license plates and compare them against databases, notifying authorities if a vehicle of interest is found. This technology allows law enforcement to review and share captured data.

Despite their utility, some regions are moving away from ALPR usage. Cities in North Carolina, Indiana, Colorado, and Wisconsin have initiated stops to their use. Florida’s Department of Transportation is removing cameras from highways, and Texas has withdrawn funding due to privacy concerns and allegations of misuse.

Nevertheless, these systems have their proponents. Former President Trump expressed support for ALPRs, highlighting their benefits for law enforcement, despite acknowledging concerns over privacy infringement.