Time LimitsReference WCAG 2.0 Guideline 2.2
Allow users to control time limits on their reading or interaction.
- the user is allowed to deactivate the time-out or;
- the user is allowed to adjust the time-out over a wide range which is at least ten times the length of the default setting or;
- the user is warned before time expires and given at least 20 seconds to extend the time-out with a simple action (for example, "hit any key") and the user is allowed to extend the timeout at least 10 times or;
- the time-out is an important part of a real-time event (for example, an auction), and no alternative to the time-out is possible or;
- the time-out is part of an activity where timing is essential (for example, competitive gaming or time-based testing) and time limits can not be extended further without invalidating the activity.
Content can be paused by the user unless the timing or movement is part of an activity where timing or movement is essential.
Except for real-time events, timing is not an essential part of the event or activity presented by the content.
Interruptions, such as updated content, can be postponed or suppressed by the user, except those involving an emergency.