Local police track cel phones, or track people via their cel phones
The practice of local police tracking cel phones has become big business for cellphone companies, too, with a handful of carriers marketing a catalog of "surveillance fees" to police departments to determine a suspect's location, trace phone calls and texts or provide other services. Some departments log dozens of traces a month for both emergencies and routine investigations.
In cities in Nevada, North Carolina and other states, police departments have gotten wireless carriers to track cellphone signals back to cell towers as part of nonemergency investigations to identify all the callers using a particular tower, records show.
In California, state prosecutors advised local police departments on ways to get carriers to "clone" a phone and download text messages while it is turned off.
In Ogden, Utah, when the Sheriff's Department wants information on a cellphone, it leaves it up to the carrier to determine what the sheriff must provide. "Some companies ask that when we have time to do so, we obtain court approval for the tracking request," the Sheriff's Department said in a written response to the A.C.L.U.
And in Arizona, even small police departments found cell surveillance so valuable that they acquired their own tracking equipment to avoid the time and expense of having the phone companies carry out the operations for them. The police in the town of Gilbert, for one, spent $244,000 on such equipment.
Cell carriers, staffed with special law enforcement liaison teams, charge police departments from a few hundred dollars for locating a phone to more than $2,200 for a full-scale wiretap of a suspect, records show.
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