using markings of different kinds; or more than one marking of the same kind; in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
at least one of the further markings being adapted for galvanic or wireless sensing, e.g. an RFID tag with both a wireless and an optical interface or memory, or a contact type smart card with ISO 7816 contacts and an optical interface or memory
