There is no obligation to have, even less to carry, an ID card in France (in French : https://www.service-public.fr/particuliers/vosdroits/F11601).
But yeah, the previous card was ridiculously large.
But yeah, the previous card was ridiculously large.
https://www.service-public.fr/particuliers/vosdroits/F11601?...
However, police forces are allowed to ask anyone their identity without any reason, and if they can't justify of their identity, they can be detained by the police for up to 4 hours for verification, and Police may requires them to do a fingerprint scan: https://www.service-public.fr/particuliers/vosdroits/F1036