Actually after checking it is not mandatory in France, it just means that an ID check will be more annoying if you happen to be controlled : https://www.service

Actually after checking it is not mandatory in France, it just means that an ID check will be more annoying if you happen to be controlled : https://www.service-public.fr/particuliers/vosdroits/F11601 https://www.service-public.fr/particuliers/vosdroits/F11601 And the same applies to travel in schengen : ID recommended but not mandatory.