The new RE system combines the advantages of the RB and RH systems. With the RE system, it is possible to flexibly switch between the office and check-in operating modes. The authorizations can thus be saved directly in the RFID door fitting or on the respective RFID transponder. The authorizations in office mode are transferred using the mobile handset. The people and assigned authorizations are managed in the management software for Windows. In the Hotel (Check IN) operating mode, RFID transponders (cards or key fobs) can be authorized without it being necessary to transfer the authorizations to the mobile handset.