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DTSTART;TZID=America/New_York:20220504T163000
DTEND;TZID=America/New_York:20220504T164500
DTSTAMP:20260417T082530
CREATED:20220422T095858Z
LAST-MODIFIED:20220426T165904Z
UID:1790-1651681800-1651682700@www.germanhci.de
SUMMARY:"Your Eyes Tell You Have Used This Password Before": Identifying Password Reuse from Gaze and Keystroke Dynamics
DESCRIPTION:A significant drawback of text passwords for end-user authentication is password reuse. We propose a novel approach to detect password reuse by leveraging gaze as well as typing behavior and study its accuracy. We collected gaze and typing behavior from 49 users while creating accounts for 1) a webmail client and 2) a news website. While most participants came up with a new password\, 32% reported having reused an old password when setting up their accounts. We then compared different ML models to detect password reuse from the collected data. Our models achieve an accuracy of up to 87.7% in detecting password reuse from gaze\, 75.8% accuracy from typing\, and 88.75% when considering both types of behavior. We demonstrate that revised{using gaze\, password} reuse can already be detected during the registration process\, before users entered their password. Our work paves the road for developing novel interventions to prevent password reuse.
URL:https://www.germanhci.de/event/your-eyes-tell-you-have-used-this-password-before-identifying-password-reuse-from-gaze-and-keystroke-dynamics/
LOCATION:Room: 288-289
CATEGORIES:Touch and tangibility
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DTSTART;TZID=America/New_York:20220504T161500
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DTSTAMP:20260417T082530
CREATED:20220422T100001Z
LAST-MODIFIED:20220426T165852Z
UID:1800-1651680900-1651681800@www.germanhci.de
SUMMARY:Smooth as Steel Wool: Effects of Visual Stimuli on the Haptic Perception of Roughness in Virtual Reality
DESCRIPTION:Haptic Feedback is essential for lifelike Virtual Reality (VR) experiences. To provide a wide range of matching sensations of being touched or stroked\, current approaches typically need large numbers of different physical textures. However\, even advanced devices can only accommodate a limited number of textures to remain wearable. Therefore\, a better understanding is necessary of how expectations elicited by different visualizations affect haptic perception\, to achieve a balance between physical constraints and great variety of matching physical textures.\nIn this work\, we conducted an experiment (N=31) assessing how the perception of roughness is affected within VR. We designed a prototype for arm stroking and compared the effects of different visualizations on the perception of physical textures with distinct roughnesses. Additionally\, we used the visualizations’ real-world materials\, no-haptics and vibrotactile feedback as baselines. As one result\, we found that two levels of roughness can be sufficient to convey a realistic illusion.
URL:https://www.germanhci.de/event/smooth-as-steel-wool-effects-of-visual-stimuli-on-the-haptic-perception-of-roughness-in-virtual-reality/
LOCATION:Room: 288-289
CATEGORIES:Touch and tangibility
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