Radio-Frequenz-Identifikation (RFID) works via a special book label with a memory chip. It allows libraries to easily identify users and resources. RFID is an add-on service for SISIS-SunRise, which can be integrated with the circulation service. RFID serves not only as an anti-theft device, it also allows libraries to take care of their inventory more easily, localize their resources, and save time labeling their resources. For more information, see the RFID page in German.