Check your pocket. You’re probably carrying a tracking device that will allow the police — or even the Trump administration — to track every move that you make. If you use a cellphone, you are unavoidably revealing your location all the time. Cellphones typically receive service by connecting to a nearby communications tower or other “cell site,” so your cellular provider (and, potentially, the police ) can get a decent sense of where you are located by tracking which cell site your phone is currently connected with. Many smartphone users also use apps that rely on GPS to precisely determine their location. That’s why Uber knows where to pick you up when you summon a car. SCOTUS, Explained Get the latest developments on the US Supreme Court from senior correspondent Ian Millhiser. Nearly a decade ago, in Carpenter v. United States (2018), the Supreme Court determined that law enforcement typically must secure a warrant before they can obtain data revealing where you’ve been from your cellular provider.…