A system includes an intermediate element, which is provided between a health file copy and at least one party with a strong authentication requiring, and for which a user is identified with some strong identification, and after which the intermediate element associates an intra-health card user identifier and a user identifying code with each other. From the database to the intermediate element is delivered information, which matches the user identifying code and requires strong authentication, whereby the intermediate element for its part delivers at least some of this particular information to such a health card with whose internal identifier the user identifying code has been associated by the intermediate element.