Keyboard Accessible
Summary in Plain English
Anything reachable with another input method has to be reachable with the keyboard interface alone.
Why It Matters
The keyboard interface is what screen readers, switch devices, sip-and-puff systems and voice control all drive. Content it cannot reach is content those users cannot reach.
Scope: When This Applies
The draft's own conditions, quoted from guidelines/groups/input-operation/keyboard-interface-input/keyboard-accessible.md.
Notes in the draft
All content includes content made available via mechanisms including but not limited to hovers, right clicks.
Other input modalities include pointing devices, voice and speech recognition, gesture, camera, and any other means of input or control.
The “Keyboard operable” requirement allows you to navigate to all actionable elements, but if the next element is 5 screens down, you also need to be able to access all the content. Also, if the content is in expanding sections, you need to not only open them but also access all of the content, not just its actionable elements.