Two Apple patent applications, newly published by the USPTO, could potentially allow for complex 3D interpretations of places iPhone owners have been. One of the documents is titled Generating a Three-Dimensional Model using a Portable Electronic Device Recording, and illustrates how an iPhone's GPS and motion sensors could complement other recording technologies, such as video. "By walking with the device in the user's real environment, a user can virtually navigate representation of a three-dimensional environment," the application says.
