The EFF is trumpeting a victory in a case in which it and the ACLU filed an amicus brief. "The US Court of Appeals for the District of Columbia Circuit today firmly rejected government claims that federal agents have an unfettered right to install Global Positioning System (GPS) location-tracking devices on anyone's car without a search warrant. ... The court agreed that such round-the-clock surveillance required a search warrant based on probable cause. ...the court noted: 'When it comes to privacy... the whole may be more revealing than its parts.'"