Sun, 05 Apr 2026 20:43:58 +0000 https://bugs.horde.org/ticket/4566 Wider captcha support including accessible options http://pear.php.net/pepr/pepr-proposal-show.php?id=433 http://pear.php.net/pepr/pepr-proposal-show.php?id=451 http://meyerweb.com/eric/thoughts/2005/01/24/wp-gatekeeper/ http://www.gigoit.org/humanauth/ http://www.accessibilityblog.com/wp-content/uploads/2006/06/zoints.png http://www.halfbakery.com/idea/Simple_20question_20CAPTCHA Fri, 27 Oct 2006 21:22:03 +0000 https://bugs.horde.org/ticket/4566#t25340 Another possibility for agents that support javascript: client-side challenge response (request a certain calculation) Sun, 29 Oct 2006 03:38:51 +0000 https://bugs.horde.org/ticket/4566#t25400 Some code for audio captchas. Mon, 06 Nov 2006 21:09:15 +0000 https://bugs.horde.org/ticket/4566#t25799 http://www.ejeliot.com/pages/2 Tue, 03 Apr 2007 03:34:43 +0000 https://bugs.horde.org/ticket/4566#t31078 http://recaptcha.net/ Wed, 30 May 2007 17:52:32 +0000 https://bugs.horde.org/ticket/4566#t33669 http://freecodesnippet.com/articles/security/preventing-spam-on-your-website-without-using-captcha/ Wed, 24 Oct 2007 23:37:41 +0000 https://bugs.horde.org/ticket/4566#t37994 http://haacked.com/archive/2007/09/11/honeypot-captcha.aspx Sat, 27 Oct 2007 01:46:33 +0000 https://bugs.horde.org/ticket/4566#t38161 http://nedbatchelder.com/text/stopbots.html Tue, 25 Mar 2008 20:38:13 +0000 https://bugs.horde.org/ticket/4566#t44183 Recaptcha now has radio-show transcription audio captchas: http://blog.recaptcha.net/2008/12/new-audio-recaptcha.html Sun, 14 Dec 2008 13:50:10 +0000 https://bugs.horde.org/ticket/4566#t51230 Overview of accessible options: http://www.webaim.org/blog/spam_free_accessible_forms/ Tue, 13 Jan 2009 16:46:51 +0000 https://bugs.horde.org/ticket/4566#t51700 http://www.web-development-blog.com/archives/create-custom-recaptcha-images-using-their-api/ Wed, 09 Dec 2009 05:10:15 +0000 https://bugs.horde.org/ticket/4566#t57076