Microsoft recently released a new app for Android called Path Guide, which allows you to easily create and follow custom routes for indoor areas that exist as linear instructions separate from a map. Think of a children's treasure hunt where each goal shows the next step, toss the whole thing on your phone, and that's the concept. Even more interesting, it makes the process of creating those directions literally as easy as taking a walk. When you want to make a path just fire up the app and go for a stroll. By pulling data from your phone's sensors as you move to your destination it handles everything for you.