cognitive-captcha-enhanced

Description

This rule is a stricter version of the cognitive-captcha rule. To follow this rule, do not use image checks or CAPTCHAs that involve math problems, word problems, puzzles, memory tests, etc. which test the mental skills of the user.

If a CAPTCHA is essential, use a solution that doesn’t test the cognitive abilities of the user. reCAPTCHA v3 is a good option to thwart bots without troubling users with cognitive disabilities.

Example

Consider the following example in which a math problem is used as a CAPTCHA.

Although this could be considered a simple math problem, it tests the cognitive abilities of the user and hence violates the cognitive-captcha-enhanced rule.

Consider the following example in which an image check is used as a CAPTCHA.

Image checks can be difficult for users with visual disabilities. Such CAPTCHAs violate the cognitive-captcha-enhanced rule.

Note that while image verification CAPTCHAs break the cognitive-captcha-enhanced rule, they do not break the cognitive-captcha rule.

In contrast, the following signup page uses reCAPTCHA v3. While it effectively blocks bots, users don’t have to perform any task that test their cognitive abilities.

How to fix?

Follow these steps to fix any violations in the cognitive-captcha-enhanced rule:

• Check if your website uses CAPTCHAs that test the cognitive abilities of a user.
• Check if your website uses image identification tests as a CAPTCHA.
• Replace any such CAPTCHAs with one that doesn’t test the cognitive abilities of a user. The best practice is to use reCAPTCHA v3.

Reference

• WCAG 3.3.9: Accessible Authentication (Enhanced)(Level AAA)
• cognitive-captcha