Greetings and welcome to the latest edition of the Injustice System newsletter. It was a big day yesterday at the U.S. Supreme Court for Fourth Amendment buffs, as the justices heard nearly two-and-a-half hours of oral arguments in a case that pits digital privacy and the right to be free from unreasonable search and seizure against a cutting-edge technology that can tell law enforcement officials about the unique location histories of millions of cell phone users.
At issue in Chatrie v. United States is a law enforcement tool known as a "geofence warrant." In this case, the police told Google to search the location histories of every one of its users in order to determine which users were present in the vicinity of a bank robbery.
