Keith's Weblog: Comments on "Sapience: Human Validation", posted on January 6, 2004 http://keithdevens.com/weblog/archive/2004/Jan/06/Sapience en-us http://keithdevens.com/weblog http://keithdevens.com/images/kbd.gif http://keithdevens.com/weblog/archive/2004/Jan/06/Sapience#comment9542 http://keithdevens.com/weblog/4630#comment9542 Thu, 06 Jul 2006 18:42:05 +0000 <p class="st-markup">There are some other nice free solutions for human validation. Good open-source code is out there, e.g. <a href="http://svn.navi.cx/misc/trunk/pycaptcha/">PyCaptcha</a>, while on the other hand there are full-blown services like <a href="http://www.humandoorway.com/">HumanDoorway</a>; in the middle are sites like <a href="http://captchas.net/">captchas.net</a>.</p>