The Government Can No Longer Track Your Cell Phone Without a Warrant | Motherboard - 0 views
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The government and police regularly use location data pulled off of cell phone towers to put criminals at the scenes of crimes—often without a warrant. Well, an appeals court ruled today that the practice is unconstitutional, in one of the strongest judicial defenses of technology privacy rights we've seen in a while. The United States Court of Appeals for the Eleventh Circuit ruled that the government illegally obtained and used Quartavious Davis's cell phone location data to help convict him in a string of armed robberies in Miami and unequivocally stated that cell phone location information is protected by the Fourth Amendment. "In short, we hold that cell site location information is within the subscriber’s reasonable expectation of privacy," the court ruled in an opinion written by Judge David Sentelle. "The obtaining of that data without a warrant is a Fourth Amendment violation."
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In Davis's case, police used his cell phone's call history against him to put him at the scene of several armed robberies. They obtained a court order—which does not require the government to show probable cause—not a warrant, to do so. From now on, that'll be illegal. The decision applies only in the Eleventh Circuit, but sets a strong precedent for future cases.
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"One’s cell phone, unlike an automobile, can accompany its owner anywhere. Thus, the exposure of the cell site location information can convert what would otherwise be a private event into a public one," he wrote. "In that sense, cell site data is more like communications data than it is like GPS information. That is, it is private in nature rather than being public data that warrants privacy protection only when its collection creates a sufficient mosaic to expose that which would otherwise be private." Finally, the government argued that, because Davis made outgoing calls, he "voluntarily" gave up his location data. Sentelle rejected that, too, citing a prior decision by a Third Circuit Court. "The Third Circuit went on to observe that 'a cell phone customer has not ‘voluntarily’ shared his location information with a cellular provider in any meaningful way.' That circuit further noted that 'it is unlikely that cell phone customers are aware that their cell phone providers collect and store historical location information,'” Sentelle wrote.
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Another victory for civil libertarians against the surveillance state. Note that this is another decision drawing guidance from the Supreme Court's decision in U.S. v. Jones, shortly before the Edward Snowden leaks came to light, that called for re-examination of the Third Party Doctrine, an older doctrine that data given to or generated by third parties is not protected by the Fourth Amendment.