https://captcha.com/accessibility/ada-captcha.html
ADA CAPTCHA: Does CAPTCHA Need to Comply with the Americans with Disabilities Act (ADA) Standards?
While ADA does not include any IT and Web-specific standards that a Captcha-protected form can be evaluated against, it is possible to make Captcha obey the...
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https://friendlycaptcha.com/accessibility/ada/
ADA-Compliant CAPTCHA - Friendly Captcha
Ensure ADA compliance with Friendly Captcha – a fully accessible, screen-reader friendly CAPTCHA that blocks bots without cognitive hurdles.
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