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Interact."],"published-print":{"date-parts":[[2021,2,28]]},"abstract":"<jats:p>\n            There is a growing need for usable and secure authentication in immersive virtual reality (VR). Established concepts (e.g., 2D authentication schemes) are vulnerable to observation attacks, and most alternatives are relatively slow. We present RubikAuth, an authentication scheme for VR where users authenticate quickly and secure by selecting digits from a virtual 3D cube that leverages coordinated 3D manipulation and pointing. We report on results from three studies comparing how pointing using eye gaze, head pose, and controller tapping impact RubikAuth\u2019s usability, memorability, and observation resistance under three realistic threat models. We found that entering a four-symbol RubikAuth password is fast: 1.69\u20133.5 s using controller tapping, 2.35\u20134.68 s using head pose and 2.39 \u20134.92 s using eye gaze, and highly resilient to observations: 96\u201399.55% of observation attacks were unsuccessful. RubikAuth also has a large theoretical password space: 45\n            <jats:italic>\n              <jats:sup>n<\/jats:sup>\n            <\/jats:italic>\n            for an\n            <jats:italic>n<\/jats:italic>\n            -symbols password. Our work underlines the importance of considering novel but realistic threat models beyond standard one-time attacks to fully assess the observation-resistance of authentication schemes. We conclude with an in-depth discussion of authentication systems for VR and outline five learned lessons for designing and evaluating authentication schemes.\n          <\/jats:p>","DOI":"10.1145\/3428121","type":"journal-article","created":{"date-parts":[[2021,1,20]],"date-time":"2021-01-20T17:52:01Z","timestamp":1611165121000},"page":"1-44","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":90,"title":["Fast and Secure Authentication in Virtual Reality Using Coordinated 3D Manipulation and Pointing"],"prefix":"10.1145","volume":"28","author":[{"given":"Florian","family":"Mathis","sequence":"first","affiliation":[{"name":"University of Glasgow, Glasgow, Scotland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John H.","family":"Williamson","sequence":"additional","affiliation":[{"name":"University of Glasgow, Glasgow, Scotland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kami","family":"Vaniea","sequence":"additional","affiliation":[{"name":"University of Edinburgh, Edinburgh, Scotland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mohamed","family":"Khamis","sequence":"additional","affiliation":[{"name":"University of Glasgow, Glasgow, Scotland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"320","published-online":{"date-parts":[[2021,1,20]]},"reference":[{"key":"e_1_2_2_1_1","doi-asserted-by":"publisher","DOI":"10.1145\/3314111.3319837"},{"key":"e_1_2_2_2_1","doi-asserted-by":"publisher","DOI":"10.1145\/3025453.3025961"},{"key":"e_1_2_2_3_1","doi-asserted-by":"publisher","DOI":"10.1109\/AIVR46125.2019.00012"},{"key":"e_1_2_2_4_1","volume-title":"Mirani and Hayretdin Bahsi","author":"Alessandro Tepljakov Aleksei","year":"2020","unstructured":"Tepljakov Aleksei Alessandro , Mirani and Hayretdin Bahsi . 2020 . 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