Tech companies ask Supreme Court to block cellphone data grab

"Some of the world’s biggest tech companies pleaded with the Supreme Court this week to update decades-old precedent governing telephones, saying that cell-tracking technology threatens Americans’ most fundamental privacy rights.


Apple, Microsoft, Google, Twitter, Facebook, Verizon and other major players in the modern digital economy asked the justices to rule that the Fourth Amendment should require police to get a warrant before they can demand cellphone location data...


...Curt Levey, president of the Committee for Justice, which signed onto another brief filed in the case, said third-party data goes well beyond cell locations to include all sorts of data internet companies hold, such as online purchases.


“This is not just about cellphones,” said Mr. Levey. “It’s virtually everything in your home...”


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