Fashion ID operates the website of the Düsseldorf fashion house Peek & Cloppenburg and had integrated Facebook's "Like" button on the website. The Consumer Advice Centre NRW considered this to be a breach of data protection, as the integration automatically resulted in the transfer of data to Facebook. In the opinion of the consumer advice centre, the necessary consent for the transfer of data to Facebook was therefore lacking. The case is still being decided under the old data protection law, but since the term "controller" is very similar in both laws, the ruling will also be relevant under the GDPR.

The ECJ has ruled that Facebook's "Like" button was not implemented in a data protection-compliant manner and that the website operator bears joint responsibility for such plugins.

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