1. A system for determining a route, said system comprising: a map of a geographic area, said map including coded data indicative of the map and a plurality of reference points on the map; a sensing device operable to sense the coded data, generate indicating data relating to the map's identity and one or more of the reference points, and communicate the indicating data to a computer system; and, the computer system operable to receive the indicating data, identify a geographic location from the indicating data and determine a route incorporating said geographic location.