What is the 6-digit initial password of the electronic social security card?

According to the French Open, the 6-digit initial password of the electronic social security card may be as follows:

1. The initial password is the social security number.

2. The initial password is a 6-digit ID number or an 8-digit date of birth.

3. The initial inquiry password is the last six digits of my social security number.

4. Each card has a password paper attached with the card, which is sealed in double layers and has an initial password on the lower layer.

5. The initial password of social security account of social security card is "123456".