Conference proceedings

Multi-touch authentication on tabletops

Kim D, Dunphy P, Briggs P, Hook J, Nicholson J, Nicholson J, Olivier P ...see all

Proceedings of the 28th international conference on Human factors in computing systems - CHI '10 (2010) p. 1093 Published by ACM Press

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Abstract

The introduction of tabletop interfaces has given rise to the need for the development of secure and usable authentica- tion techniques that are appropriate for the co-located col- laborative 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 eval- uate a number of novel tabletop authentication schemes that exploit the features of multi-touch interaction in order to in- hibit 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.

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Authors

  • David Kim

  • Paul Dunphy

  • Pam Briggs

  • Jonathan Hook

  • John Nicholson

  • James Nicholson

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