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Most of recent research on indoor location sensing information has been presented in dull and unpleasant 2D image standard. This paper focuses on high precision three-dimensional received signal strength indication (RSSI)-based location information in an interactive virtual reality on PDA. The developed system operates by capturing and extracting signal strength information at multiple pre-defined reference nodes to provide information in the area of interest, thus updating user's location in 3D indoor virtual map. Virtual Reality Modeling Language (VRML), which specifically developed for 3D objects modeling is utilized to design 3D indoor environment. To shorten the rendering time in low-power processing PDA, culling algorithm is introduced to render only essential 3D objects needed for navigation. Meanwhile, RSSI accuracy refinement algorithm introduced reduces noises in signal strength mainly caused …