Captcha is nowadays a criterion Internet security method to defend online email as well as other services from being mistreated by bots. Captcha, differentiates human users from computers by means of presenting a challenge beyond ability of computers however simple for humans. Captcha is employed to defend sensitive user inputs on client of untrusted client and this system defends the communication channel among user as well as Web server from spyware. In our work we set up a novel security primitive on basis of tough AI problems, specifically, a novel family of graphical password systems combining Captcha technology, which was known as CaRP (Captcha as gRaphical Passwords). The concept of CaRP is effortless but generic and contains numerous instantiations. CaRP presents security against attacks of online dictionary on passwords, which have been most important security threat for a variety of online services. CaRP also presents security against relay attacks, a rising threat to bypass Captch as securing, wherein challenges concerning captcha are conveyed to humans to work out. CaRP is tough towards shoulder-surfing attacks if shared with techniques of dual-view. Any Captcha system which depends on numerous object classifications is improved in the direction of a CaRP scheme. A most important differentiation among CaRP images as well as Captcha images is that the entire visual objects in alphabet have to come into view in a CaRP image to permit a user to enter any password however not essentially in a Captcha image. Many schemes of Captcha are converted to CaRP schemes, which are clicked-based graphical passwords.