Alternative input devices are tools that allow users to interact with computers and other digital systems in ways that differ from traditional methods like a keyboard and mouse. These devices can include touchscreens, styluses, trackballs, and voice recognition systems, which cater to various needs and preferences. They are especially beneficial for individuals with disabilities or those seeking more intuitive ways to control technology. These devices enhance accessibility and usability by providing different modes of input. For example, eye-tracking technology enables users to control a cursor with their gaze, while adaptive switches allow individuals with limited mobility to operate devices using simple button presses. Overall, alternative input devices expand the ways people can engage with technology.