The term CAPTCHA stands for "Completely Automated Public Turing-test to tell Computers and Humans Apart". The security code works by asking the website visitor to type in the code they see correctly. A human can do this, but an automated computer program cannot which helps in protecting websites among spammers. Captcha Image Creator is a powerful and fully customizable asp Script. Free utility creator to create a random security images on every reload of your web page. The Security image codes created randomly can be checked for human authentication.