CAPTCHA

CAPTCHAs can be used by MediaWiki wikis to prevent spam. Several implementations currently exist in extensions. Extension:ConfirmEdit is the base framework upon which other CAPTCHA extensions are generally built.

Feature idea

Write a version of reCAPTCHA that uses document images that have been processed by MediaWiki's ProofreadPage extension for WikiSource. In other words, a CAPTCHA that feeds data to ProofreadPage to augment its OCR processing. You might build on existing code.

Filed as bug 32695.

See also

• TEDxCMU -- Luis von Ahn -- Duolingo: The Next Chapter in Human Computation