> For the complete documentation index, see [llms.txt](https://alphabot-docs.gitbook.io/alphabot/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://alphabot-docs.gitbook.io/alphabot/raffles/entry-requirements/captcha.md).

# Captcha

By checking the `Require CAPTCHA` checkbox, a CAPTCHA requirement can be added. This requires users to complete a CAPTCHA and adds an extra layer of anti-bot measurements. This presents as a Re-CAPTCHA on the website, and a simple math problem if the user is registering within Discord.