Multi-touch authentication on tabletops

David Kim, Paul Dunphy, Pam Briggs, Jonathan Hook, John Nicholson, James Nicholson, Patrick Olivier

    Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

    78 Citations (Scopus)


    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.

    Original languageEnglish
    Title of host publicationCHI 2010 - The 28th Annual CHI Conference on Human Factors in Computing Systems, Conference Proceedings
    Number of pages10
    Publication statusPublished - 1 Jul 2010
    EventInternational Conference on Human Factors in Computing Systems 2010 - Atlanta, United States of America
    Duration: 10 Apr 201015 Apr 2010
    Conference number: 28th


    ConferenceInternational Conference on Human Factors in Computing Systems 2010
    Abbreviated titleCHI 2010
    CountryUnited States of America
    Internet address


    • graphical passwords
    • multi-touch interaction
    • shoulder surfing
    • user authentication

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