When registering as a user, you are simultaneously assigned a pin code. If you forget your pin code, you need to show up at the Library desk in person to get a new code.
How do I change my pin code or address?
You can change your personal settings such as pin code, e-mail address, language preferences etc. yourself. Just log in and click My Account in the upper right corner. Thereafter, find "personal settings" in the menu where you can administer your changes.