I've added Google Analytics tracking to my Windows Phone 8 app as per this blog post:
When I ran the program the first time I got an "access denied" Exception when the Analytics NuGet package requested the device ID (get_DeviceID). I went into my app manifest and requested ID_CAP_DEVICE_ID privileges. Now it works fine.
My concern is, will asking for this privilege create problems for me somewhere else? For example, will it limit my exposure in the Windows Phone store or adversely affect my downloads significantly in some way? I'm still looking to see if there's a way to have the Analytics module not request the device ID, but I haven't found it yet.