How iOS 11 changes location tracking on your iPhone and iPad | Macworld
In iOS 11, Apple offersa better way to know what apps are users, which will hopefully lead to apps that are better behaved. This is seemingly an outcome from Uber (and potentially other apps) gathering information from users when the app isn’t in use (although in Uber’s case, they may not have crossed a line).Apple’s guidelines for background location services allow for updates of specific needs, such as with navigation or fitness apps. But there’s no realistic way for Apple to know precisely how apps are tracking data, so the company has to rely on outside reports. A couple of academic efforts to let users track in-app information flow revealed that location (and other private data) may be sent without appropriate disclosure. While Apple provides a small visual cue in the status bar, users have to be paying attention to spot it and might not know what the tiny arrow that appears and disappears means
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