When creating an account or filling out an online form, it is common to be asked for address titles based on a person's gender. However, on Jan. 9, 2025, the European Court of Justice (the Court) ruled that there is often no valid basis for the collection of address titles. The case was brought by the association Mousse ("Mousse") against the French Data Protection Authority ("CNIL") and SNCF (the French Railways). With the judgment, the Court ticked off both the SCNF and the French Personal Data Authority. The latter had rejected Mousse's complaint in this regard.