Timed Responses

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Timed Responses

Timed Responses

  • When a timed response is required, the user shall be alerted and given sufficient time to indicate more time is required.

Accessibility problems can occur if your Web page times-out while a user is completing a form. For security reasons or to reduce the demands on the server, you may be tempted to design pages with scripts so that they disappear or "expire" if a response is not received within a specified amount of time.

A person with a disability may not be able to read, move around, or fill in a Web form within the prescribed amount of time. For this reason, the Access Board included the following standard:

When a timed response is required, the user shall be alerted and given sufficient time to indicate more time is required.

This is actually a performance standard rather than a design standard because it does not reference a specified length of time for users to respond. To satisfy this requirement, the actions you should take are twofold:

  1. Notify the user if a process is about to time-out.
  2. Provide a prompt asking whether additional time is needed.
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