The TouchIT 80" Dual Touch Interactive LED is an integrated touch-based LEDs on the market. It is not an overlay. Utilising the latest optical touch technology, the TouchIT LCD Duo is capable of dual inputs under Windows 7. Simply take the USB cable from the LED and attach it to your laptop, then click on and open the software, you now have a teaching tool to convey your lesson to the class or work group. By using your finger or a stylus to touch the LED, you have a mouse at your 'fingertips' to communicate your ideas. There is no need for any special pointing device or stylus. Touching the screen for both left and right click mouse functionality enables you to control your computer directly from the display.