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Evaluating Web-Based User Authentication using Graphical Techniques
Jali MZ, Furnell SM, Dowland PS
Proceedings of the Third International Symposium on Human Aspects of Information Security & Assurance (HAISA 2009), Athens, Greece, ISBN: 978-1-84102-231-4, pp108-118, 2009
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Graphical techniques are one of the many alternatives proposed to address the weaknesses in the conventional authentication based upon username and passwords. In this paper, two methods of graphical technique, namely ‘click-based’ and ‘choice-based’ are studied in term of their usability for web-based authentication. A total of 21 participants were asked to use prototype implementations and provide feedback. From the data analysed in terms of number of attempts, accuracy, time, pattern and user feedback, it was found that the choice-based method performed better. However, with regard to security, participants rated the choice-based method as weak. Overall, it was found that although both methods have advantages and could be used for authentication, more work needs to be done to balance the issues of security and usability.

Jali MZ, Furnell SM, Dowland PS