Welcome to the sixteenth of 31 applications we will post (in addition to the contest participants' submissions). Make sure you add this blog to your RSS / Atom feed and check the gallery for summaries of all the apps as they are released.

CAPTCHA is a method used to help prevent automated posting to website forms.  This web application demonstrates a simple way to generate a CAPTCHA image using DotImage.

Each time the page loads it will generate a new image to validate against.  Simply type in the characters and press ENTER to run a comparison.  It will return an indication of whether the text entered was correct or incorrect below the textbox.