Success Criterion 2.2.4: Interruptions

Understanding Success Criterion: 

Interruptions can be postponed or suppressed by the user, except interruptions involving an emergency.

Accessibility Level: 
AAA
Intent of Success Criterion: 

The intent of this Success Criterion is to allow users to turn off updates from the author/server except in emergencies. Emergencies would include civil emergency alert messages or any other messages that warn of danger to health, safety, or property, including data loss, loss of connection, etcetera.
This allows access by people with cognitive limitations or attention disorders by enabling them to focus on the content. It also allows users who are blind or have low vision to keep their "viewing" focus on the content they are currently reading.

Specific Benefits of Success Criterion: 
  • Individuals with attention deficit disorders can focus on content without distraction.
  • Individuals with low vision or who use screen readers will not have content updated while they are viewing it (which can lead to discontinuity and misunderstanding if they start reading in one topic and finish in another).