Captcha as a Graphical Passwords - A New Security Primitive based on Hard AI Problems

Abstract

This project is the need for the predefined regions to be readily identifiable. A
graphical password system with a supportive sound signature to increase the
remembrance of the password is discussed. In proposed work a click-based graphical
password scheme called Cued Click Points (CCP) is presented. The possibility selecting the
password is very less. In this paper, we present an advanced CAPTCHA technique; our
technique essentially relies on employing the human recognition ability, which is not
available in automated bots or machines, through leveraging the handwriting
characteristics in designing CAPTCHA. Moreover, the proposed CAPTCHA technique adopts
handwritten characters of four different languages (English, Arabic, Spanish, and French)
to generate handwritten multilingual CAPTCHA text using characters from the four
adopted languages. Furthermore, the initial experiments’ results have shown a promising
security level that the proposed CAPTCHA technique can provide.