1. A computer-implemented method for selecting a unique geographic feature, the method comprising the steps of: inputting data to a computer representing a user position; inputting data to the computer representing a user orientation; defining with the computer and a database connected thereto a polygon in response to the user position data and the user orientation data, with the polygon having a defined length that is defined as a function of a density of geographic features enclosed within the polygon; providing to the computer from the database connected thereto a set of geographic features coinciding with the polygon; filtering with the computer and the database connected thereto the set of geographic features to determine a most likely unique geographic feature, with filtering including determining whether a selected geographic feature is selectable by the polygon; and selecting with the computer and the database connected thereto the most likely unique geographic feature coinciding with the polygon and returning to a user at least identifying information relating to the unique geographic feature.