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How to use Accessibe captcha

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  • Use a text alternative that clearly defines the purpose of the primary CAPTCHA such as “Type the word in the image” or “Type the letters spoken in the audio”.
  • Provide an alternative modality to the primary CAPTCHA, reset captcha button.
  • Be keyboard accessible in logical sequence, and meet all other WCAG success criteria such as sufficient text colour contrast, text zoom and motion control.
  • Use an audio button that allows blind people to hear the written text, clearify the number, litters if captital letter or small and symbols.