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3D-Auth: Two-Factor Authentication with Personalized 3D-Printed Items

Marky, Karola and Schmitz, Martin and Zimmermann, Verena and Herbers, Martin and Kunze, Kai and Mühlhäuser, Max (2020):
3D-Auth: Two-Factor Authentication with Personalized 3D-Printed Items.
In: CHI '20: Proceedings of the 2020 CHI Conference on Human Factors in Computing Systems, ISBN 978-1-4503-6708-0,
DOI: 10.1145/3313831. 3376189,
[Online-Edition: https://dl.acm.org/doi/abs/10.1145/3313831.3376189],
[Conference or Workshop Item]

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.

Item Type: Conference or Workshop Item
Erschienen: 2020
Creators: Marky, Karola and Schmitz, Martin and Zimmermann, Verena and Herbers, Martin and Kunze, Kai and Mühlhäuser, Max
Title: 3D-Auth: Two-Factor Authentication with Personalized 3D-Printed Items
Language: English
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.

ISBN: 978-1-4503-6708-0
Uncontrolled Keywords: Two-Factor Authentication, 3D Printing, Capacitive Sensing
Divisions: 20 Department of Computer Science
20 Department of Computer Science > Telecooperation
Event Title: CHI '20: Proceedings of the 2020 CHI Conference on Human Factors in Computing Systems
Date Deposited: 05 Feb 2020 07:22
DOI: 10.1145/3313831. 3376189
Official URL: https://dl.acm.org/doi/abs/10.1145/3313831.3376189
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