This website enables a traveller to stick digital pins on a world map. Friends and family can then follow the progress. We do this by accepting a simple SMS containing the nearest town to you. We do some analysis to find the latitude/longitude coordinate of the nearest town with that name using your previous location. This is then plotted on a Google map. Short Message Service (SMS) is the ability to send and receive short alphanumeric messages (maximum 160 characters) to and from mobile telephones.I haven't received the SMS yet.