A new geographic location API is included with the Windows Phone 8 SDK. This WinPRT API supersedes the Windows Phone 7 .NET API that relies on the
GeoCoordinateWatcher class. Although the .NET API is still supported, for new apps it is recommended that you use the new
Geolocator class that is part of the new WinPRT API. The new WinPRT geo location API has many similarities with the .NET API.
The new geographic location API is located in the namespace