Federal judge rules a Flock plate search was unconstitutional mass surveillance

A federal judge in Oklahoma ruled Thursday that a police officer’s warrantless search of Flock’s automatic license plate reader network violated the Fourth Amendment, 404 Media reports. U.S. District Judge Sara Hill suppressed the Flock evidence and everything that followed from the roadside stop.

The facts are blunt. Tulsa County Deputy Freddie Alaniz saw a Mazda with a California plate, followed it “for no apparent reason other than” the out-of-state tag, and ran the plate through Flock. He then used the car’s travel history from those cameras as part of the justification to search Melisa Kyle’s vehicle. The ALPR dig alone returned more than 50 location records across the country for a full month. Hill wrote that the search was “not supported by probable cause” and was done without a warrant.

Automatic license plate readers are cameras that photograph plates and store where cars went. Flock stitches those reads into a network police can query on demand. Hill’s opinion treats that historical map as something different from watching a single car on a public road. The nationwide system is “approaching dragnet-type law enforcement practice,” she wrote, and is “a type of indiscriminate mass surveillance.”

404 Media calls the decision one of the first times a federal judge has held that a Flock search can be unconstitutional. Audit logs the outlet reviewed show more than a hundred thousand warrantless Flock searches every month. The ruling does not set binding precedent, and other ALPR cases are still pending. Flock said it was not a party to the case, expects an appeal, and argued the opinion is limited to these facts — language that tracks CEO Garrett Langley’s earlier claim that courts had already blessed the product under the Fourth Amendment.

This courtroom fight lands beside a different Flock story from the same news cycle: Sens. Bernie Sanders and Jeff Merkley, with Rep. Alexandria Ocasio-Cortez, filing a Ban Flock Act to cut federal agencies off from ALPR networks. A bill is a political wager. A suppression order is a warrant rule applied to a named stop. One asks Congress to rewrite the market. The other tells a deputy that pulling a month of national location history because a plate was from California is already a search.

Public roads were never private. Continuously updated location histories for every car the network sees are not the same thing as a single glance from a patrol car. Hill drew that line. Whether appellate courts keep it is the next fight — and the inventory of warrantless queries suggests the industry has been betting they would not.