(1) Identity card holders shall be obligated to do the following without delay:
1. present their identity card to the identity card authority if the card contains incorrect information;
2. surrender their old identity card to the identity card authority upon receipt of a new identity card;
3. report lost identity cards to the identity card authority and, if it is found, present it to the identity card authority;
4. inform the identity card authority of any foreign citizenship acquired; and
5. inform the identity card authority of any voluntary service in the armed forces or similar organization of a foreign country of which they are citizens.
(2) The identity card holder shall take reasonable measures to ensure the confidentiality of the PIN code. In particular, card holders should not note the PIN code on the identity card or store the PIN code together with the card. If the card holder knows that the PIN code has been disclosed to a third party, he or she should immediately change the PIN code or have the electronic identification function blocked.
(3) Identity card holders should take technical and organizational measures to ensure that the electronic identification function in accordance with Section 18 is used only in an environment considered secure in accordance with the state of the art. Card holders should use in particular those technical systems and components certified by the Federal Office for Information Security as secure for this purpose.