In Europe, the police have the right to know who you're on the phone with and when. Storing the personal phone and email data of European Union citizens has been the law for the past five years. Officials say the move is necessary to investigate serious crimes. This practice was spearheaded by the so-called Data Retention Directive of the European Commission. In a newly released report assessing the effectiveness of storing personal data, the Commission insists that it's useful.
 

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