This one I really liked! It's called BreadCrumbz and it's a mobile navigation app for Android, that provides users with the ability to create routes with directions on the fly. The app uses the phone's camera and GPS capabilities to take geo-tagged pictures of your route while Android's location APIs and Compass sensor track their progress as they navigate. The app then uses the Maps API on Android to overlay route information such as arrows or notes on top of a map.

When you are done, BreadCrumbz creates for you a personalized, picture-based map that you can mail your friends / share via GTalk or bluetooth / upload on the web, in order to show people directions to a specific building or landscape.

I found out about BreadCrumbz from a YouTube demo. BreadCrumbz was one of 20 winners in the Open Handset Alliance's Android Developer Challenge, earning a $100,000 prize in the process. You can get it free for the T-Mobile G1 through the Android Market.

The future for BreadCrumbz holds voice capabilities, which are reportedly in the works. Also it promises to let people share walking tours of their favourite city, for example, or document personal stories with location-based pictures and information. Businesses can also use this sort of thing to bring customers to their door—or even illustrate multiple points along their supply chain.

I'm thinking about using this in a road trip I've got planned for Xmas. I'll let you know if it works.!