A system for determining a route is provided. The system comprises a map of a geographic area, a sensing device and a computer system. The map includes coded data indicative of the map and a plurality of reference points on the map. The sensing device is 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 the computer system. The computer system is operable to receive the indicating data, identify a geographic location from the indicating data and determine a route incorporating the geographic location.