A system for printing a trading card on a print medium. The system comprises a mobile telecommunications device which includes a printer module to print the trading card on the print medium and a sensor module to sense a print media identifier of the print medium. Information associated with the trading card can be stored in an archive, and the sensor module can be used to link the trading card to the print media identifier. The print medium is provided with coded data encoding information, at least some of the information being indicative of the print media identifier.