Foursquare Tracks Users Even When App Is Closed

(Undated) -- Foursquare knows where you are, even if you turn off the app. People who download the app now automatically allow the company to track their GPS coordinates any time their phone is turned on. Users can change a setting to opt out. But before this week, users had to give Foursquare permission to turn on location-tracking. Foursquare is a location-based social networking app.