I'll make this short. I pre-loaded my walking directions on the maps app on my iPod Touch before going downtown Chicago. When I got downtown, I turned it on, and (like normal) it saved what I had pre-loaded at home. (That is normal) Then I pressed "Start" and I noticed that as I walked, it tracked me! This happened for about two or three blocks. It was pretty accurate too! How the heck is this possible? It shouldn't of been picking up wifi because it won't join any networks unless I tell it to. Yet, it was tracking me as I walked just like an iPhone would. Explanation?