This project focused on the development and testing of new technologies for mobile navigation devices, such as 3D mapping apps for smartphones. The objectives were twofold: 1) test how different perspectives of the environment affect navigation performance and spatial learning, and 2) develop testing software that allows for usability analysis in a controlled lab setting. Such technologies are rapidly becoming everyday tools for many people, but without understanding how the visual interfaces affect human performance, we can only guess our way toward more designing more effective mobile guides. The work performed at the Human Interface Technologies Lab New Zealand provided important enhancements to the handheld navigation platform being developed at the lab, allowing handheld devices to interact directly with a large stereo-projection system capable of presenting an immersive computer-generated 3D environment. In addition, this NSF project supported the development of a 3D model of central Christchurch, which can be explored using the handheld navigation system. Together, these tools will continue to enhance our understanding of human spatial cognition as well as the technologies we use to augment navigation performance in the real world. Finally, the project also successfully established important collaborative research links between the Principle Investigator and colleagues in New Zealand, offering a valuable research link in an area of computer science that continues to develop internationally.