US carriers selling access to your real-time location data

Four of the largest cell giants in the US are selling your real-time location data to a company that you've probably never heard about before.In case you missed it, a senator last week sent a letter demanding the Federal Communications Commission (FCC) investigate why Securus, a prison technology company, can track any phone "within seconds" by using data obtained from the country's largest cell giants, including AT&T, Verizon, T-Mobile, and Sprint, through an intermediary, LocationSmart.Well, at least your messaging app is end-to-end encrypted, right?