A bio metric based approach for using captcha - to enhance accessibility for the visually impaired.

To propose a system for convenience in using CAPTCHA by the Visually Impaired person. To make this access secure CAPTCHA ("Completely Automated Public Turing test to tell Computers and Humans Apart") was invented. This form of CAPTCHA requires that the user type the letters of a distorted image, sometimes with the addition of an obscured sequence of letters or digits that appears on the screen. This traditional method receives many criticism from the disable people. Hence a finger print based CAPTCHA is introduced. A CAPTCHA MONSTER, a convenient system of breaking CAPTCHA for the Visually Impaired is Proposed. Thus in this proposed system, it is possible to access the web services on websites for various day to day applications by effective authentication procedure.