FOIA docs obtained by @josephcox show the Secret Service talking about how they don't need a warrant to track phone locations because people "willingly" gave it away by agreeing to long terms of service docs for random apps
'FYI. A Warrant Isn’t Needed': Secret Service Says You Agreed To Be Tracked With Location Data
The Secret Service has used a technology called Locate X which uses location data harvested from ordinary apps installed on phones. Because users agreed to an opaque terms of service page, the Secret Service believes it doesn't need a warrant.


