Generate a digital map of the city in which you live. You can take a laptop fitted with a GPS receiver and go around in the city and note the longitude and latitude values of the important places and...

Generate a digital map of the city in which you live. You can take a laptop fitted with a GPS receiver and go around in the city and note the longitude and latitude values of the important places and bus stops. This information can be transferred onto the map. This map can be used for developing location-based services, a navigation system, and so forth. And, you can sell such a map for a good price too!