Think you're entitled to privacy? Not if you don't power off your cell phone. At least, that's what federal judge Gary Brown says.
A federal judge recently ruled that if someone has their cell phone turned on, their location data does not deserve protection under the Fourth Amendment, meaning law enforcement can track individuals without a search warrant.
ACLU calls the ruling "ridiculous", and it does appear to contravene prior rulings prohibiting authorities from affixing a gps tracking device to a car, absent a warrant, but the judge says that location tracking technology can be defeated by a cell phone user by the simple expedient of shutting the phone off. Of course, that means that you've just turned your phone into a doorstop, since you can't place or receive calls when it's turned off. Moreover, some phones can't actually be turned off completely unless you take the further step of removing the battery.