Multi-Touch Authentication on Tabletops

David Kim; Paul Dunphy; Jonathan Hook; John Nicholson; James Nicholson; Professor Patrick Olivier

Multi-Touch Authentication on Tabletops Lookup NU author(s) David Kim Paul Dunphy Jonathan Hook John Nicholson James Nicholson Professor Patrick Olivier



Author(s)		Kim D, Dunphy P, Briggs P, Hook J, Nicholson JW, Nicholson J, Olivier P
Editor(s)
Publication type		Conference Proceedings (inc. Abstract)
Conference Name		28th Annual CHI Conference on Human Factors in Computing Systems
Conference Location		Atlanta, Georgia, USA
Year of Conference		2010
Date		10-15 April 2010
Volume		2
Pages		1093-1102
ISBN		9781605589299




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The introduction of tabletop interfaces has given rise to the need for the development of secure and usable authentication techniques that are appropriate for the co-located collaborative settings for which they have been designed. Most commonly, user authentication is based on something you know, but this is a particular problem for tabletop interfaces, as they are particularly vulnerable to shoulder surfing given their remit to foster co-located collaboration. In other words, tabletop users would typically authenticate in full view of a number of observers. In this paper, we introduce and evaluate a number of novel tabletop authentication schemes that exploit the features of multi-touch interaction in order to inhibit shoulder surfing. In our pilot work with users, and in our formal user-evaluation, one authentication scheme - Pressure-Grid - stood out, significantly enhancing shoulder surfing resistance when participants used it to enter both PINs and graphical passwords.



Publisher		ACM
URL		http://delivery.acm.org/10.1145/1760000/1753489/p1093-kim.pdf
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