$Id: README.txt,v 1.13.2.1.2.2 2007-07-13 17:44:33 robloach Exp $ ### Captcha Readme captcha.module is the basic captcha module that offers general captcha adminstration and a simple math captcha challenge. text_captcha offers another simple text based captcha challenge. image_captcha offers an image based captcha challenge. Installation: Installation is like all normal modules (e.g. extract in the directory sites/all/modules) The basic captcha module has no dependencies, so nothing special is required. If you had an old version of the captcha module installed, it is possible that you need to uninstall and reinstall this captcha module after overwriting/upgrading from the previous version. Configuration: The configuration page is at admin/settings/captcha, here you can configure the captcha module and enable captchas for the desired forms. Caching: Captcha interacts with page caching (admin/settings/performance). A captcha prevents caching of pages on which it appears. You need to make sure forms with a captcha do not appear on too many pages, or cache will be effectively off. The comment submission form is the cause for most concern. Make sure you set the "Location of comment submission form" to "Display on separate page" on Administer » Content management » Comments, tab Settings (admin/content/comment/settings) or your content will no longer be cached.