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Low-Cost Multi-point Interactive Whiteboards Using the Wiimote Since the Wiimote can track sources of infrared (IR) light, you can track pens that have an IR led in the tip. By pointing a wiimote at a projection screen or LCD display, you can create very low-cost interactive whiteboards or tablet displays. Since the Wiimote can track upto 4 points, up to 4 pens can be used. It also works great with rear-projected displays.

Motion controllers used in gaming systems like the Nintendo Wii revolutionised how video games are played. But now a similar device that's more precise - and even works when an object is in its way - will let you try something more futuristic: making movies in virtual environments. Matt Bett and his team from Abertay University in the UK developed the new motion controller that uses electromagnetic sensors to track its 3D position. The location is then mapped in real time to a virtual video camera on a screen (see video above). By moving the controller around, the camera moves around the scene like a real camera on a rig or it can be fixed to a virtual tripod.