A method of sending a message using a print medium is disclosed. A tag on a surface of the print medium is sensed using a sensor module. The surface includes a plurality of tags with each tag encoding an identifier which uniquely identifies the surface and a position with respect to the surface. From the tag sensed by the sensor module the identifier and the position with respect to the surface of the tag sensed by the sensor module are determined. A communications address is obtained, using the identifier and the position, from a database where the communications address is indexed by the identifier and the position. A message editor in a communications device is then opened, with a current message being addressed to the communications address.