PC Pro UK has a fascinating article about the navigational maps we use on our devices and how they are made. This behind-the-scenes look examines how the four biggest digital map providers maintain their vast repository of information.
Nokia-owned Navteq has a database that includes 24 million miles of roads and makes 2.4 million changes to its database each day, says Navteq's vice president Frank Pauli. These changes are made based on information provided by users, governments and its own mapping efforts.
Another big map provider is Dutch company TomTom. TomTom is not as big as Navteq, but it is able to effectively use data supplied by its devices w
