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Police Can Get Access to Your Cellphone Data Even After the Supreme Court Ruling | FiveThirtyEight

Jun. 25, 2014 at 6:41 PM

Police Can Get Access to Your Cellphone Data Even After the Supreme Court Ruling

A Supreme Court ruling on the search and seizure of cellphones is being hailed as a victory for digital privacy, but technology can still put your private data in law enforcement’s hands.

On Wednesday, the justices unanimously ruled inRiley v. Californiathat warrants are required for cellphone searches at the time of arrest. Such warrantless searches have been a point of controversy, and only six states have declared them illegal. But how exactly will the court’s decision change what takes place in jurisdictions across the country?

We couldn’t find data on how oftenwarrantless cellphone searches on arrest occur, but the American Civil Liberties Union (ACLU) did obtain a copy of an extraction reportthat shows which types of data law enforcement was accessing. The informationincluded call logs, text messages, photos, videos, contacts and web history, as well as dataon location history (based on cell towers and Wi-Fi networks), passwords and content that had been manually deleted.

But the high court’s decision doesn’t prohibitwarrantless cellphone tracking by police. The ACLU conducted a study in 2012 in which it filed more than 380 public record requests to local law enforcement agencies across the U.S. Of the roughly 250 agencies thatresponded, 92 reported engaging in cellphone tracking, and only 10 reported that they did not track cellphones. (The remainder provided a vague statement or no statement at all about phonetracking.) Only six of the agencies that tracked cellphones saidwarrants were required bylocal or state law.

This is the crux of the Supreme Court ruling law enforcement agencies now need a warrant to search anyone’s cellphone at the time of arrest, but they can obtain similar information by using their own cellphone-tracking technology or by obtaining data from cellular-service providers. Through tracking, law enforcement agencies can determine whether a phonehas been in any given area at any given time. Additionally, they can accessfurther information, such as call logs and text messages.

It appearslaw enforcement makes useof this ability. The New York Times reported in 2012 that cellphone carriers responded to 1.3 million requests from law enforcement agencies for this kind of subscriber information in the previous year. A singleagency, Californias San Bernardino County Sheriff’s Department, provided the ACLU with283 pages of invoices from AT&T, Verizon, Sprint, T-Mobile and other cellphone carriers, which accounted for just one year of its surveillance operations.

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