Do not mention to the public or the media the use of cellphone technology or equipment used to locate the targeted subject,” the Iowa City Police Department warned officers in one training manual. It should also be kept out of police reports, it advised.
In Nevada, a training manual warned officers that using cell tracing to locate someone without a warrant “IS ONLY AUTHORIZED FOR LIFE-THREATENING EMERGENCIES!!” The practice, it said, had been “misused” in some standard investigations to collect information the police did not have the authority to collect.