The document describes how to turn a Nintendo Wii remote (Wiimote) into an interactive whiteboard using an infrared (IR) pen. It explains that the Wiimote contains an IR camera that can detect the location of an IR light source, like an IR pen. By pairing the Wiimote to a Bluetooth-enabled computer and using special software, the Wiimote can transmit the location data from the IR pen to the computer to function like a mouse click on a projection screen. The document provides instructions for pairing the Wiimote, downloading the necessary software, pointing the Wiimote at the screen, and calibrating the system to create an interactive whiteboard.