Does law enforcement need a warrant before planting a GPS tracking device on a car ? Yes , the Supreme Court has to decide that they should , says Catherine Crump . As the Jones appellate court explained in its ruling that the government violated the Fourth Amendment , `` A person who knows all of another 's travels can deduce whether he is a weekly churchgoer , a heavy drinker , a regular at the gym , an unfaithful husband , an outpatient receiving medical treatment , an associate of particular individuals or political groups -- and not just one such fact about a person , but all such facts . '' The privacy at stake in a current case may well violate our privacy rights , she says . All of us can already easily be tracked through our cell phones , Crump says .
Does law enforcement need a warrant before planting a GPS tracking device on a car ? Yes , the Supreme Court has to decide that they should , says Catherine Crump . The privacy at stake in a current case may well violate our privacy rights , she says . All of us can already easily be tracked through our cell phones , Crump says .