Google is tracking location of many cell phone users even though they turned off the function or said no in the privacy settings. Mostly found on smart phones. Android and Iphones big user of google apps. Probably found in Google Maps apps. A history and/or map of location data of the phone is stored.
https://www.nbcnewyork.com/news/tec...Location-Data-Privacy-Settings-490697711.html
https://www.nbcnewyork.com/news/tec...Location-Data-Privacy-Settings-490697711.html