So Long as You Carry a Cellphone, the Government Can Track You

Cell phones are convenient devices, handily connecting us with loved ones, paying bills, accessing information—and treacherously reporting on our every move. Worse, even after the Supreme Court weighed in, many government agencies still insist that they have the right to pull up that tracking data to see our whereabouts. It's increasingly apparent that, if you have your phone in your pocket, you may as well have a GPS beacon strapped to your ankle. If you want anonymity from the government, leave the gadget at home.

That point was illustrated in...