Joysticks control the movement of the device one is using. The lever on a joystick can be used to move pointers in various directions, similar to a mouse. According to PCMag, the term originated to describe the main controller in small airplanes.
Joysticks can be a form of assistive technology that are very resourceful for those who have physical disabilities. Large corporations such as Microsoft have recognized the accessibility benefits of joysticks and sell assistive technologies that include joysticks, such as the Xbox Adaptive Controller.