Abstract: GPS (Global Positioning System) technology is widely known for its ability to track down devices in real time.Combined with mobile phones, it has become a very powerful tool with a great potential for future development of mobile GPS applications.The Interactive ZooOz Guide was a final year industry project carried out by seven students from three separate courses to tackle a project that involves upgrading the Melbourne Zoo's mapping system through the use of GPS technology.The aim of the project is to explore the potential capability of using GPS in the Zoo environment.The proposed system uses a PDA device with a GPS receiver that tracks users' location in real time as they are touring around the Zoo.In this paper, an insight into GPS technology is briefly reviewed and the design and implementation of "Interactive ZooOZ Guide" is described.Then GUI (Graphical User Interface) is presented in detail.Finally conclusion is drawn from the "proof of concept" prototype.