Turn on your phone's GPS and Google knows your whereabouts. Not just one location, but every stop along the way. Google tracks where your smartphone goes and puts "a neat red dot on a map to mark the
occasion." per The Big Picture. The post points to a page that allows mobile users to access their history. The mobile number links to the history to see the record of everywhere the
user has been from the last day to the past month. Users can "pause" their location history tracking, but Google warns that doing so "will not delete the existing Location History
data, which still can be used to improve your overall Google experience."