The U.S. Supreme Court today ruled that the government needs to obtain a court-ordered warrant to gather location data on mobile device users. The decision is a major development for privacy rights, but experts say it may have limited bearing on the selling of real-time customer location data by the wireless carriers to third-party companies.
At issue is Carpenter v. United States, which challenged a legal theory the Supreme Court outlined more than 40 years ago known as the “third-party doctrine.” The doctrine holds that people who voluntarily give information to third parties — such as banks, phone
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