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Wii Remote is the standard controller of the game console Nintendo Wii®. Despite its low cost, it has a very high performance and high resolution infrared camera. It also has a built-in chip for tracking up to 4 points from the infrared images. With these properties, the Wii Remote has attracted several attempts to calibrate and use them for metric 3D information. Thanks to Wii Remote's 4 point tracking hardware, people were able to calibrate Wii Remotes using carefully designed square patterns with infrared LEDs at each corner. However, it is not easy for average Wii Remote users to implement such calibration tools. In this paper, we give an overview of the current Wii Remote calibration implementations and present a novel method to fully calibrate multiple Wii Remotes using only two points, such as the LEDs of the Sensor Bar that comes with the Wii console. For the 3D reconstruction, only two Wii Remotes and a PC is needed. We also demonstrate the usability of a full 3D tracker with a multiplayer game that receives inputs from up to 4 users with only two Wii Remotes.