Captcha as Graphical Passwords—a New Security for improving accessible security.

Abstract

Many security primitives are based on hard mathematical problems. Using hard AI problems for security is emerging as an exciting new paradigm,but has been under explored a novel family of graphical password systems built on top of Captcha technology,which we call Captcha as a graphical passwords (CaRP).. CaRP addresses a such as online guessing attacks, relay attacks, and, if combined withdual-view technologies, shoulder-surfing attacks. CaRP also offers a novel approach to address the well-known image hotspot problem in popular graphical password systems, such as PassPoints, that often leads to weak password choices. Carp is not a solution, but it offers logical security and usability and appears to fit well with some practical applications for improving accessible security.