Abstract
Two-factor authentication is a widely recommended security mechanism and already offered for different services. However, known methods and physical realizations exhibit considerable usability and customization issues. In this paper, we propose 3D-Auth, a new concept of two-factor authentication. 3D-Auth is based on customizable 3D-printed items that combine two authentication factors in one object. The object bottom contains a uniform grid of conductive dots that are connected to a unique embedded structure inside the item. Based on the interaction with the item, different dots turn into touch-points and form an authentication pattern. This pattern can be recognized by a capacitive touchscreen. Based on an expert design study, we present an interaction space with six categories of possible authentication interactions. In a user study, we demonstrate the feasibility of 3D-Auth items and show that the items are easy to use and the interactions are easy to remember. Show more
Publication status
publishedExternal links
Book title
CHI '20: Proceedings of the 2020 CHI Conference on Human Factors in Computing SystemsPages / Article No.
Publisher
Association for Computing MachineryEvent
Subject
capacitive sensing; two-factor authentication; 3d printingOrganisational unit
09775 - Zimmermann, Verena / Zimmermann, Verena
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ETH Bibliography
no
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