Admission to the reading room and browsing open-access library materials is free of charge. However, users must register and pay the registration fee to borrow library materials and for the use of all other available library services. Students at the University of Ljubljana pay the annual fee for using all libraries at the University of Ljubljana, CTK, NUK when register at the beginning of the school year together with other inscription expences. The University of Ljubljana students can use the UL-ID digital identity to join the library via the COBISS online registration service.