Requests for the exercise of rights, what supporting documents?
Exercice des droits RGPD : quand est-il justifié de demander une pièce d’identité ? Évitez les excès et restez conforme.

A bad habit has developed in order to respond to requests to exercise rights: Systematically ask for an identity card.
And yet, ensuring the identity of a person exercising a right is essential. Responding to an usurper or the wrong person constitutes a personal data breach that puts the data controller at risk of being sanctioned.
However, we will see in this video that systematically requiring a photocopy of an identity document, as soon as the identity of the person can be sufficiently established otherwise, is disproportionate and constitutes an obstacle to people's rights.