To change your password, sign in to invenio and select Benutzerdaten (user details) from the menu. You will then see your personal contact details.
Your password must be between 8 and 20 characters long. It must contain upper-case letters, lower-case letters and at least one number. Special characters are also allowed.
If you have forgotten your password, you can have a new one sent by clicking on Passwort vergessen? (forgot password?) on the log-in page and then entering your username and email address.