A Study of Graphical Password Usability on Smartphones in a Week

Abstract

Smartphone technology nowadays is very progressive.With a powerful camera, high-speed connectivity, touchscreen interface, millions of different applications development and also a biometrics authentication system such as fingerprint scanner, iris scanner and even face scanner but whenever biometrics authentication system accidentally failed a smartphone still uses text passwords, PINs or Android's Unlock Pattern as a secondary authentication system but users typically create week text passwords since strong text passwords are difficult to recall and memorise.PINs and Android's Unlock Pattern are easier to recall and memorise but also having the guessablity problem.Graphical password system is one of the approach which propose of solving the memorability problem.In this paper we implemented and optimised the selected existing graphical password systems to smartphones and conducted an experiment to study and compare a usability of graphical password to the current secondary authentication system on smartphones in a week.