“There is no reasonable expectation of privacy in one’s Google location data. It’s willingly shared with Google.”
The Fourth Circuit split 2-1 in United States v. Chatrie and held that Location History is fair game because users opted in. Google reported a 1,500% jump in geofence requests from 2017 to 2018 and another 500% the next year. Google wrote its own three-step procedure for handling them, so a corporate policy now does the job the warrant requirement used to do. Flip one setting in Google Maps and the court treats your every movement as public.