Supreme Court rules against police attaching GPS device to auto without warrant.

In a unanimous decision the Supreme Court ruled that the police placing a GPS device on a suspected drug dealers car constitutes a search. The justices concluded that the Fourth Amendment forbids the government from obtaining information by physically intruding on a constitutionally protected area. Grand Rapids Criminal Defense Lawyer. Other justices agreed with the conclusion of the majority, but noted that a better analysis concludes that reasonable expectations of privacy were violated by the long term monitoring of the movement of the vehicle driven by the defendant. .Grand Rapids Criminal Defense Help. The decision is without a doubt a victory for privacy and ensures that the high tech use of GPS will only be used after a Judge signs a valid warrant.