Through apps, not warrants, ‘Locate X’ allows federal law enforcement to track phones, by Charles Levison

High tech companies keep dreaming of better and better ways for the government to know everything about you. From Charles Levison at protocol.com:

Federal agencies have big contracts with Virginia-based Babel Street. Depending on where you’ve traveled, your movements may be in the company’s data.

U.S. law enforcement agencies signed millions of dollars worth of contracts with a Virginia company after it rolled out a powerful tool that uses data from popular mobile apps to track the movement of people’s cell phones, according to federal contracting records and six people familiar with the software.

The product, called Locate X and sold by Babel Street, allows investigators to draw a digital fence around an address or area, pinpoint mobile devices that were within that area, and see where else those devices have traveled, going back months, the sources told Protocol.

They said the tool tracks the location of devices anonymously, using data that popular cell phone apps collect to enable features like mapping or targeted ads, or simply to sell it on to data brokers.

Babel Street has kept Locate X a secret, not mentioning it in public-facing marketing materials and stipulating in federal contracts that even the existence of the data is “confidential information.” Locate X must be “used for internal research purposes only,” according to terms of use distributed to agencies, and law enforcement authorities are forbidden from using the technology as evidence — or mentioning it at all — in legal proceedings.

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