User card for the Central Library

The Central Library uses the number on the back of the CAU Card. This number is shown as a bar code with the digits underneath.

The card holder is under no obligations through the user number on the CAU Card. You will need to accept the User Regulations to set up an active account in the Centre Library.


An activated user account entitles you to use the services at the Central Library. The specialised libraries (Fachbibliotheken) have their own User Regulations which the CAU Card does not support.