Generates an image with an obfuscated text string which a user must repeat in a form field. Captchas are used to prevent bots from using various types of computing services. Applications include preventing bots from taking part in online polls, submitting entries in a guest book etc. This captcha extension for TYPO3 is meant to be used by multiple other extensions.
The captcha extension now uses TYPO3 session handling. Some bugfixes and a github repository has been created for it. See documentation changelog for more information.