The Supreme Court will decide if warrantless locational tracking violates the Fourth Amendment. The Court granted review of a District of Columbia Circuit Court of Appeals opinion on two legal questions. The first is whether police need a warrant to monitor the movements of a car with a tracking device. The second is whether policy can legally install such a device without their target's consent, and without a valid warrant. EPIC previously filed an amicus brief in Commonwealth v. Connolly, a Massachusetts case which established that the state Constitution prohibited warrentless GPS tracking. The Massachusetts Supreme Judicial court imposed time limits on GPS monitoring, ruling that warrants will expire fifteen days after they are issued. For more information, see EPIC: US v. Jones and EPIC: Locational Privacy.