To be clear, this is more of data that is psuedo-anonymous, but it’s still tracking people. It’s using different assemblies of data to determine trends, and various demographics. It’s not registering Benjamin Rockwell, but it’s registering a white male, about 50, who has some level of affluence, and technological savvy. This end run around warrants will give leads, but not specifics… but it’s still creepy, in the same way that I keep getting ads for joining AARP and AMAC no matter what device I use.

U.S. law enforcement agencies signed millions of dollars in contracts with a Virginia company, Babel Street, after it rolled out a tool that uses data from mobile apps to track the movement of people’s cell phones, sources told Protocol.