One of the most useful features of mobile computers like smartphones and tablets is the ability to identify their location in the real world. Just this feature alone has made possible ride-sharing services that allow devices to track the position of both cars and waiting passengers in real time.
Tracking the location of an iOS device involves Global Positioning System (GPS), cell ID location, and WiFi positioning service (WPS). By using three different services, Apple’s Core Location framework can pinpoint the location of an iOS device with varying degrees of accuracy.
Fortunately, ...
