Clipper Cards Reveal Travelers’ Whereabouts to Cops, Lawyers, Apps

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Use of the Clipper card, accepted by every major Bay Area public transit system, is soaring, with 689,000 transactions a day and more than 1 million active Clipper cards. Photo by Scott James/Bay Citizen

By Zusha Elinson,  Bay Citizen

San Francisco police arrested Marcel Largaespada on April 30 after a gunpoint robbery at a Lombard Street business, but they couldn’t catch his alleged accomplice, Alan McCahill.

McCahill gave officers the slip, investigators believed, by hopping on a Muni bus.

He was caught days later. To try to place McCahill at the scene, prosecutors subpoenaed the information from his Clipper card, which they believed he’d used to pay his bus fare.

The request for McCahill’s travel record was one of the rare occasions that police or lawyers have sought to use the Clipper card database to track the whereabouts of a cardholder.

According to the Metropolitan Transportation Commission, which administers the card, it has received three search warrants or subpoenas seeking customers’ personal travel information since the card’s inception in 2010. In only one of those cases did the search turn up any relevant travel information, according to the commission’s response to a public records request from  Bay Citizen.

Read the complete story at Bay Citizen.

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