2.5.6 Concurrent Input Mechanisms
Conformance level: AAA
Criterion released in WCAG version: 2.1
TL;DR: Support multiple input methods at the same time (mouse, touch, keyboard, stylus) without breaking functionality. Don’t lock users into one interaction mode.
Official description of the success criterion
Web content does not restrict use of input modalities available on a platform except where the restriction is essential, required to ensure the security of the content, or required to respect user settings.
What to do?
Ensure that functionality can be operated using different input methods concurrently.
Why is it important?
Provides flexibility for users who switch between input methods.