The Article 29 Working Party (WP) has adopted “one of the most significant opinions published recently,” according to the Hunton & Williams Privacy and Information Security Law Blog. The opinion explains the purpose limitation principle in the EU Data Protection Directive, clarifying its scope, definitions and application to Big Data, and also makes recommendations for improvement. The WP has found that “vague purpose statements” will “usually not suffice,” and compatible use will require a case-by-case analysis based on four key factors, the report states. The purpose limitation principle indicates "free, specific, informed and unambiguous 'opt-in' consent" is almost always necessary when organisations want to use previously collected personal data in Big Data projects, Out-Law.com reports.
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