CHI 2023 (TH-CPL A)
Bridging the Generational Gap: Exploring How Virtual Reality Supports Remote Communication Between Grandparents and Grandchildren
Xiaoying Wei, Yizheng Gu, Emily Kuang, Beiyan Cao, Xian Wang, Xiaofu Jin, Mingming Fan*

When living apart, grandparents and grandchildren often use audio-visual communication approaches to stay connected. However, these approaches seldom provide sufficient companionship and intimacy due to a lack of co-presence and spatial interaction, which can be fulfilled by immersive virtual reality. To understand how grandparents and grandchildren might leverage VR to facilitate their remote communication and better inform future design, we conducted this work...
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ChineseCHI 2022 Honorable Mention Award
Communication in Immersive Social Virtual Reality: A Systematic Review of 10 Years' Studies
Xiaoying Wei, Xiaofu Jin, Mingming Fan*

As virtual reality technologies have improved in the past decade, more research has investigated how they could support more effective communication in various contexts to improve collaboration and social connectedness. We conducted a systematic review of the studies investigating communication in social VR in the past ten years by following the PRISMA guidelines.
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UbiComp 2022 (TH-CPL A)
Synapse: Interactive Guidance by Demonstration with Trial-and-Error Support for Older Adults to Use Smartphone Apps
Xiaofu Jin, Xiaozhu Hu, Xiaoying Wei, Mingming Fan*

As smartphones are widely adopted, mobile applications are emerging to provide critical services. This trend may create barriers for older adults. We designed an app-independent mobile service for help-givers to create a multimodal interactive tutorial on a smartphone and for help-receivers (e.g., older adults) to receive interactive guidance with trial-and-error support when they work on the same task...
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CHI 2021 (TH-CPL A)
Auth+Track: Enabling Authentication Free Interaction on Smartphone by Continuous User Tracking
Chen Liang, Chun Yu, Xiaoying Wei, Xuhai Xu, Yongquan Hu, Yuntao Wang, Yuanchun Shi

We propose Auth+Track, a novel authentication model that aims to reduce redundant authentication in everyday smartphone usage. By sparse authentication and continuous tracking of the user's status, Auth+Track eliminates the "gap" authentication between fragmented sessions and enables "Authentication Free when User is Around"...
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UbiComp 2021 (TH-CPL A)
QwertyRing: Text Entry on Physical Surfaces Using a Ring
Yizheng Gu, Chun Yu, Zhipeng Li, Zhaoheng Li, Xiaoying Wei, and Yuanchun Shi

The software keyboard is widely used on digital devices such as smartphones, computers, and tablets. The software keyboard operates via touch, which is efficient, convenient, and familiar to users. However, some emerging technology devices such as AR/VR headsets and smart TVs do not support touch-based text entry. In this paper, we present QwertyRing, a technique that supports text entry on physical surfaces using an IMU ring...
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CHI 2019 (TH-CPL A)
HandSee: Enabling Full Hand Interaction on Smartphones with Front Camera-based Stereo Vision
Yu Chun, Xiaoying Wei, Shubh Vachher, Yue Qin, Chen Liang, Yueting Weng, Yizheng Gu, Yuanchun Shi

UIST 2019 (TH-CPL A)
Accurate and Low-Latency Sensing of Touch Contact on Any Surface with Finger-Worn IMU Sensor
Yizheng Gu, Yu Chun, Zhipeng Li, Weiqi Li, Shuchang Xu, Xiaoying Wei, Yuanchun Shi

Head-mounted MR systems enable touch interaction on any physical surface. However, optical methods (i.e., with cameras on the headset) have difficulty in determining the touch contact accurately. We show that a finger ring with IMU can substantially improve the accuracy of contact sensing from 84.74% to 98.61% (f1 score), with a low latency of 10 ms...
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