“the quintessential problem with these warrants is that they never include a specific user to be identified”
Police in Mississippi had no suspects for a 2018 post office robbery, so they had Google search its location data for every device near the scene for an hour. The Fifth Circuit now calls that general rummaging the Fourth Amendment was written to ban. It also let the evidence in on good faith, so the two defendants still lose. Last month the Fourth Circuit went the other way in Chatrie, and your location privacy now depends on your zip code.