If you have a digital camera that lacks GPS support, Point4Pic is a Windows Phone app that could come in handy. The app tracks your movements as you are out taking photos and with the help of a desktop application, geotags your photos.
Your trip data is backed-up on your OneDrive account and while the process isn't very complicated, there is a slight learning curve. In the end, your photographic journey will be mapped out within the app and your images tagged with the location and altitude of where you snapped the pic. Overall, I can see Point4Pic being a useful Windows Phone app if you need to geotag your photos. You just need a little patience as you learn your way around things.
Full story from the WindowsCentral blog...