Making it possible for people to access and operate a web interface or application using the keyboard benefits people who can’t use a mouse due to a visual impairment or mobility impairment.

Screen reader users can take advantage of the many keyboard commands that screenreaders supports to make navigation and interaction easier. However, these aren’t available to sighted people who don’t need a screen reader but have physical impairments that make it difficult or impossible to use the mouse. For maximum usability, controls must be operable using standard keystrokes, and tracking focus as it moves through a page should be as easy as possible.