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.
|Publication status||Published - 2010|
|Event||Input, security and privacy policies: the 28th international Conference on Human Factors in Computing systems (CHI'10) - Atlanta, GA, USA.|
Duration: 1 Jan 2010 → …
|Conference||Input, security and privacy policies: the 28th international Conference on Human Factors in Computing systems (CHI'10)|
|Period||1/01/10 → …|