Court of Justice 11 July 2024, C-394/23 (Mousse v Commission nationale de l'informatique et des libertés (CNIL) and SNCF Connect.)

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The Advocate General's opinion addresses the legality of SNCF Connect's requirement for customers to provide their titles (Monsieur or Madame) during online purchases, in relation to the principles of lawfulness and data minimisation under the GDPR. It examines whether such data collection is necessary for contract performance or legitimate interests, considering common practices in commercial communications and the rights of individuals who may not identify with the provided titles. The opinion seeks clarification on whether the compulsory collection of this data respects the GDPR's requirements and the right to object based on individual circumstances.AI