Understanding Success Criterion 2.5.6: Concurrent Input Mechanisms

Understanding Success Criterion 2.5.6 Concurrent Input Mechanisms

Make sure that users can use or switch to different input mechanisms while interacting with your content on the web.

Official Requirements

Success Criterion 2.5.6 Concurrent Input Mechanisms (Level AAA): 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.

Why is it required?

Users with disabilities use Assistive Technologies to access the web, such as users with mobility impairment using a mouse and keyboard on their touchscreen mobile device. Therefore, allowing different modes of input to interact with your content will help disabled users to access your content as they desire. 

How do we fix it?

  • Ensure that users can switch between different input modes to interact with your content
  • Use only  high-level, input-agnostic event handlers in javascript such as focus, blur, and click
  • Also, register event handlers for keyboard/keyboard-like and pointer inputs simultaneously in Javascript

Are there any exceptions?

When the restriction is essential to secure the content or is required to respect user settings

Mistakes to avoid

The Input mechanism is limited to touch-only on touchscreen devices

Picture of Aditya Bikkani

Aditya Bikkani

Aditya is the COO of AELData, a growing technology company in the Digital Publishing and Education sectors. He is also an entrepreneur and founder of an accessibility tool called LERA. A W3C COGA (Cognitive and Learning Disabilities Accessibility) Community Member Aditya contributes to researching methodologies to improve web accessibility and usability for people with cognitive and learning disabilities.

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