Instead of using a mouse, interactive touch whiteboards let users control a computer directly by touching the board with a finger or a pen. Infrared touch, a dual OS, a camera, and four arrays of microphones. The most reliable and long-lasting touch technology is used on infrared touch screens. Infrared touch technology, which is intended for business use, operates by integrating LED lights and sensors into a monitor’s bezel above the glass. These LEDs create an invisible grid by beaming a signal to the appropriate sensor on the other side. The sensors can identify the touch location when a finger or other solid item breaks the grid. The most economical option available is by far infrared touch screens.