A method is disclosed of operating a RFID-enabled mobile telephone for indicating information of at least one portable object (e.g. key, passport, glasses or medical box). The mobile telephone has an RFID communication unit and the method includes operating the RFID communication unit for receiving an RFID signal from an RFID tag that is attached to the at least one portable object; evaluating the received RFID signal for determining tag information; and presenting the tag information to the user of the mobile telephone for indicating current information of the at least one portable object. This way, up-to-date information of the portable objects is available precisely when needed.