Today the Supreme Court is hearing arguments in a case that’s likely to affect the privacy rights of anyone who carries a cell phone. The case, U.S. v. Jones, is about whether law enforcement needs a warrant before planting a GPS tracking device on a person’s car. But more and more, the government is monitoring people’s movements by tracking their cell phones.
It doesn’t matter whether your phone is a smartphone or not, or whether you use it to make calls — as long as your phone is turned on, it registers its location with cell phone networks several times a minute — and all U.S. cell phone companies hold on to that data.
Watch the ACLU’s Catherine Crump explain what’s at stake on ABC News:
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