Most people are all too familiar with forgetting where they parked their car. Whether or not you’re one of these people, read on to learn about writing a location-aware Windows Phone app that can map, route, take pictures, and save state between invocations.Overview
Use GPS on your Windows Phone to work with maps, routing, and the camera in order to keep track of your parking space. This is also available as an app on the Windows Phone Marketplace. Link (via Zune) here
NOTE: You must enter your own Bing Maps API key in RouteHelper.cs or you will not be able to view maps or perform any map routing.
You can get more information on obtaining your own free key here
More details can be found at the Coding4Fun article on MSDN Channel9