“But ALPRs are simply not comparable to observing an individual license plate on a passing car.”
In United States v. Sturdivant, Cleveland police ran an open-ended search through Flock and ELSAG to find a robbery suspect. No warrant. The district court said nobody has a privacy interest in a license plate. That treats a camera network logging every car in a city like a cop glancing at a bumper. The Sixth Circuit now decides whether the Fourth Amendment survives surveillance bought on a vendor contract.