I first read of the iPhone hidden data from the usual sources a Mac person turns to; My twitter stream and daringfireball.net. My friends and twitter pals are generally of the Macintosh using persuasion, I saw several references to the data kept on iPhones and a reference to the open source Mac app released by Alasdair Allan and Pete Warden to allow iPhone users to actually see their iPhone’s data visualized over a map with a timeline. I installed the app and sure enough, saw my iPhone data visualization, with the timeline running as a sort of slideshow. I saw that it referenced my car trip to NC to my…