According to a recent investigation conducted by the Associated Press(美联社), many Google services on both Android and iPhone devices store records of user location data, and the bad news is that they do it even if the users have turned off the Location History on devices.
Google replied to the study with the following statement, “There are a number of different ways that Google may use location to improve people's experience, including Location History, Web and App Activity, and through device-level Location Services. We provide clear descriptions of these tools, and strong controls so people can turn them on or off, and delete their histories at any time.”
That isn't true. Even with Location History paused, some Google apps automatically store time-stamped location data without asking. The Associated Press has used location data from an Android smartphone with Location History turned off to design a map of the movements of Princeton researcher Gunes Acar. The news agency was able to track his movements and identify visited locations, including his home address.
“The privacy issue affects some two billion users of devices that run Google's Android operating software and hundreds of millions of worldwide iPhone users who rely on Google for maps or search.” continues the Associated Press. Jonathan Mayer, a Princeton researcher and former chief technologist with the FCC remarked that location history data should be deleted when the users switch off the Location History. “If you're going to allow users to turn off something called Location History, then all the places where you keep location history should be turned off.” Mayer said, “That seems like a pretty straightforward position to have.”
