hackslurp-"Yes it is as cool as it sounds. Indoor navigation is a great idea. If you can navigate in the outdoors then you can surely bring up a map of buildings especially important and famous ones like airports etc. This is the idea behind Google Maps 6.0 iteration.
With indoor maps you can e.g search and navigate to where your exit gate is or where you can find your luggage or where can you buy a laptop in a shopping complex."