A method of communicating non-native print objects in MO:DCA Architecture for controlling and operating RFID writer or reader devices without requiring separate control data streams or systems to be implemented at the host computer. Data references and command identifiers are placed by application program means at the host computer into the page description data so that RFID information can be retrieved and downloaded to the printer and RFID apparatus when the print data is being processed in the print server or main processor of the printer without interfering with normal operation of the printer itself.