The Associated Press

The Associated Press @AP

The @AP has learned that U.S. law enforcement agencies across the country have used a cell-phone tracking data tool called “Fog Reveal,” at times without a search warrant, to follow people’s movements months back in time. https://t.co/QLYGVMy7Kr — PolitiTweet.org

The Associated Press @AP

U.S. police departments have used the “Fog Reveal” database to follow people’s movements based on hundreds of billions of records from 250 million devices. The data originates from common apps such as Starbucks and Waze, @AP’s reporting shows. https://t.co/kgNNz51YEQ — PolitiTweet.org