A BlackBerry GPS app works by continuously recording the GPS location of the BlackBerry you are tracking. The GPS location is then uploaded from the BlackBerry to a remote server in various intervals. As an administrator (the person who installed the software), you can view all the location information via an online dashboard that will list all the GPS locations. Each location has a time and date stamp, so you can also view historical tracking info. Now to view more detailed information, you simply click on a location you want more info on, and then you'll see where the GPS coordinates are located on a map.