A.26 WCAG 2.1 Success Criterion 3.2.5 − Change on Request

Items such as slideshows may automatically change context. In this case, ensure functions are available for users to control this automated change.

Before Rectification

The example above shows a webpage having live updates of news items. Persons with vision impairments or specific learning difficulties may not have enough time to read all the news items before the automatic update with the latest news items.

After Rectification

In this example, users who have difficulties in reading the news items within the time limit are provided with the option to request an update or pause the update.

WCAG 2.1 Reference:

https://www.w3.org/WAI/WCAG21/Understanding/change-on-request