Required
If a Graphic Challenge/Response is used to validate the user, then an Audio Challenge/Response must also be provided.
Many registration processes, or other validation routines depend on CAPTCHA challenges to determine who is a real person making the request, and who is an automated process trying to steal access to the system. The typical solution is to provide a Graphic Challenge. That is those little boxes of crazy squiggly words that you have to decipher and type into a text field. Obviously, people who can not see the graphic can not pass the challenge. Therefore and Audio alternative must provided. If one is not provided you have excluded an entire segment of the population.
Guidelines:
Anytime you find a Graphic Challenge like this...
You must also provide an Audio Challenge.
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