Making graphic-based authentication secure against smudge attacks
Proceedings of the 2013 international conference on Intelligent user interfaces
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One of the famous and attractive features of a mobile device is the touch screen, especially in smart phones, where the same physical space could be used for various functions in different modes. Smudge or the remaining mark of the figure after touching the screen is very dangerous and could be used by hackers and malware applications to gain sensitive information. In this paper we will study the problem of smudge attacks on smart-phone touch screens and their impacts on e-commerce applications. The main focus will be on how such smudge attacks could be used for fraud and identity spoofing. Finally, we will try to propose some solutions for this attack and discuss the feasibility of their implementations.