""It's awesome," Jennifer Granick, the director of civil liberties at Stanford Law School, told Ars. "On whether the Fourth Amendment applies, it follows the [Supreme Court] case of Jones, as it must. But there were all kinds of side issues which the judge correctly decided. For example, he had to decide if the Fourth Amendment meant a warrant was required for this tracking, and he said it did. There is no car exception to the warrant requirement. In short, he ensured that the Jones opinion means something in the Third Circuit."" Read more » about Appellate court: Nope, feds can’t just GPS track your car without a warrant
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