Operable principle
This principle speaks to the need for web content to be functional and controllable by users of all abilities, using various assistive devices/technologies. It involves:
- ensuring web pages have the same keyboarding functionality whether using keyboards, "puff and sip" devices, touch devices or other assistive software/hardware or gestures such as pinching, swiping, shaking, panning, etc.
- giving users enough time to read and interact with the content
- providing options to turn off, adjust or extend time limits
- allowing users to pause, stop or hide moving content
- designing content in a way that isn't known to cause seizures
- enabling shortcut keys, navigable page elements, visual indication of keyboard focus, etc.
Applicable criterions
2.1.1 - Keyboard
2.1.2 - No keyboard trap
2.2.1 - Timing adjustable
2.2.2 - Pause, stop, hide
2.3.1 - Three flashes or below threshold
2.4.1 - Bypass blocks
2.4.2 - Page titled
2.4.3 - Focus order
2.4.4 - Link purpose (in context)
2.4.5 - Multiple ways
2.4.6 - Headings and labels
2.4.7 - Focus visible
2.5.1 - Pointer gestures
2.5.2 - Pointer cancellation