BIBLOS is an application for using the first Slovenian online library and bookstore with electronic books. You can rent or buy e-books through it. Membership in one of the libraries included in the Biblos system is required for borrowing. Use library acronym + no for username. cards. Your password is the same as the COBISS password for the My Library service. If you don't have a password for My Library yet, contact your library, where they will arrange one for you.