Where Am I? Using Location-Based Services
Robert Kao, Dante Sarigumba, Anthony Rizk, Kevin Michaluk · Apress eBooks · 2011
The BlackBerry API includes functionality to determine where in the world your device is and information such as the speed of the device. This information is obtained using the Global Positioning System (GPS) hardware that’s built in to many current devices, or it is obtained optionally from an external Bluetooth GPS receiver.