Germany has echoed US concerns about the data Apple collects about the users of its iPhones.
German justice minister Sabine Leutheusser-Schnarrenberger has asked Apple to reveal the kind of data the company is collecting, according to the New York Times.
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The move comes after US congressmen Edward Markey and Joe Barton sent a letter to Apple chief executive Steve Jobs about the same issue.
Under German law, it is illegal to collect personal data such as geographic location and web traffic without an individual's permission.
German data protection experts said Apple could attempt to solve the problem by obtaining the consent of users before sharing data with third parties.