T-Mobile, Sprint, And AT&T Are Selling Access To Their Customers’ Location Data

.....and that data is ending up in the hands of bounty hunters and others not authorized to possess it, letting them track most phones in the country.

"Nervously, I gave a bounty hunter a phone number. He had offered to geolocate a phone for me, using a shady, overlooked service intended not for the cops, but for private individuals and businesses. Armed with just the number and a few hundred dollars, he said he could find the current location of most phones in the United States."

Read more about the shady data sales at Motherboard.