Abstract: A system is provided for RF communication between a host terminal or computer system (“host”) and a portable printer through RF signal transmissions. The host has a RF communication interface and is programmed to send and receive data via the interface to a portable printer. The portable printer has a printing mechanism for printing on media and a RF communication interface to send and receive data from a host. The printer is programmed to link with a host and then operate responsive to data received in RF signals from a host linked to the printer. Each portable printer has a unique serial number which is recorded in a barcode present on the housing of the printer and/or in an RFID tag coupled to the printer. The host has either, or both, an optical scanner or an RFID transmitter/receiver to read the printer's barcode or RF signals from the tag to obtain the printer's serial number.