Fourth Amendment

A federal judge has ruled that a warrantless search conducted using Flock surveillance technology violated the Fourth Amendment. The decision means evidence from the search cannot be used against the defendant and raises fresh questions about the legal limits of automated license plate reader networks. Civil liberties advocates have long argued such systems enable dragnet surveillance, and the ruling is being watched for its potential impact on how police nationwide may use the technology.

A federal judge has ruled that warrantless searches of Flock license plate camera networks may violate the Fourth Amendment's protection against unreasonable searches. The decision raises questions about how police across the United States can query automated license plate reader data, which is widely shared between agencies and used to track vehicle movements without a warrant.