This document discusses touchless technology for controlling devices without physically touching screens. It introduces touchless sensors like Tobii Rex, Elliptic Labs, and EyeSight that track eye movement, hand gestures, or pointing to navigate interfaces. The document outlines the workflow of optical matrix sensors and touchless SDKs that enable touchless control. Examples of applications are provided, like Mauz and Leap Motion. Advantages include easier and more satisfying interactions without risk of screen damage. The conclusion discusses how touchless interfaces may become more common in laptops and computers.