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Browsing by Author "Ullah, A."
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Graphical and text based challenge questions for secure and usable authentication in online examinations
Ullah, A.; Xiao, Hannan; Barker, T.; Lilley, M. (Institute of Electrical and Electronics Engineers (IEEE), 2014-12)In traditional online examination environments, physical interaction is often replaced with authentication mechanisms. The absence of face-to-face interaction increases the number of authentication challenges. The authors ...