SAN FRANCISCO -- A state appeals court has rejected a cellphone thief's argument that San Francisco police violated his privacy by using GPS to track him down.

The San Francisco Chronicle (http://bit.ly/1btPCnb ) says the First District Court of Appeal ruled Tuesday against Lorenzo Barnes.

Barnes pleaded guilty to robbing a couple at gunpoint in 2009.

The woman allowed her cellphone provider to ping her phone, police traced it to the Mission District and within an hour Barnes was under arrest.

He got 13 years and 8 months in prison but appealed after the U.S. Supreme Court last year barred police from using evidence obtained by attaching a GPS tracker to a car.

But the appeals court said Barnes had no legitimate expectation of privacy over a cellphone he'd stolen.

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Information from: San Francisco Chronicle, http://www.sfgate.com