(AP) - The Sacramento County Sheriff's Department is implementing a policy for controversial phone-tracking technology.
Sheriff Scott Jones announced the operations order Tuesday to govern the use of Stingray devices, which mimic cell towers and provide location information for people under investigation.
Devices do not collect the content of phone calls and text messages.
The American Civil Liberties Union is legally challenging the department's actions. Sacramento County's public defender's office filed motions last week demanding the names of clients tracked with Stingray devices.
Jones said the new policy was possible because the FBI loosened its nondisclosure agreement.
ACLU of Northern California staff attorney Linda Lye says the policy is a step forward even though it does not seem to require probable cause warrants.