Messaging using a coded surface

A method of sending a message using a print medium, the method comprising the steps of:

• sensing, by a sensor module, a tag on a surface of the print medium, the surface including a plurality of tags with each tag encoding an identifier which uniquely identifies a region on the surface and a position with respect to the surface;
• determining, by a processing device, 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;
• obtaining, by the processing device, using the identifier and the position, a communications address from a database where the communications address is indexed by the identifier and the position;
• and
• opening, by the processing device, in a communications device a message editor, with a current message being addressed to the communications address.