Wii remote console based touch screen was developed by Johnny Lee. Wiimote is a bluetooth enabled gesture based remote control that is made available with Nintendo Wii gaming console. To make a touch screen, Wii remote console is sufficient instead of a complete gaming console.

To make a Wiimote based touch screen:

• A button enabled infrared (IR) light pen,
• A Wii remote console and
• A software (developed by Johnny Lee) is required.

Wiimote detects the infrared light attached to pen. When the button of the pen is pressed, software detects the positioning of the pen on the screen and sends a signal to the software; causing it a touch event. The detection can also be done by keeping the pen away from the screen. It does not require touching the IR light pen on the screen.  The touch screen size can be scaled from a normal laptop screen to a large projected screen.

Wii based touch screen is relatively cheaper than other touch screens, though it requires a small set up to be made to make Wii based touch screen. Wii based touch screen works well with rear projection.

More details can be found at Johnny Lee’s website: http://johnnylee.net/projects/wii/
Wii remote console can be bought in India in the range of INR 1600-2000.