Ziqi Liu 刘子琦

Hi! I’m Ziqi Liu.

I’m a first-year M.phil student at the UbiquitousX Lab at Hong Kong University of Science and Technology (HKUST), supervised by Prof. Qijia Shao. Prior to HKUST, I got my B.Eng degree at Tsinghua University (THU), advised by Prof. Yuntao Wang and Prof. Haipeng Mi.

My research lies at the intersection of Mobile & Ubiquitous Computing and HCI. I focus on wearable and mobile sensing technologies, adaptive interactive systems, and mobile health, aiming to design AI-assisted systems that implicitly sense users’ behavioral and physiological states and provide timely, personalized, context-aware interventions.

I have gained valuable research experience in multiple esteemed labs, including the Future Lab and Pervasive HCI Group at Tsinghua University. I am also currently collaborating with Prof. Dong Ma at the Mobile Systems Research Lab at the University of Cambridge.

Research Interests

Mobile and Wearable Sensing

I repurpose built-in sensors on mobile and wearable devices or design custom wearables to capture rich behavioral and physiological signals during natural interaction. My work integrates innovations in both hardware and algorithms to enable less intrusive acquisition of higher-quality signals for downstream tasks.

Adaptive Interactive Systems

I design systems that extract and analyze users’ interaction intentions and habits from their behavioral and motion data, providing real-time and personalized interaction assistance to improve user experience in scenarios such as mobile interaction, eye-gaze recognition, indoor localization, and AR/VR.

Mobile Health and Well-being

I design algorithms that extract meaningful features and information from users’ behavioral and physiological data (PPG, EDA, ECG and etc.). By combining with domain knowledge, I transform them into health insights, to provide personalized, actionable health guidance and support.

News

Jul 01, 2026	Our paper “PreTap: Implicit Reachability Analysis and Tap Prediction for One-handed Mobile Interaction” has been accepted by IMWUT 2026 with minor revision! 🎉 See you at Shanghai!
Apr 17, 2026	Our project “PreTap: Implicit Reachability Analysis and Tap Prediction for One-handed Mobile Interaction” has won the 1st Prize for HKUST UROP! Congrulations to Ziyi and the team! 🎉 See the news here!
Nov 08, 2025	Spent a wonderful week at Mobicom 2025 in Hong Kong as a student volunteer! 📸
Aug 15, 2025	Arrived in Hong Kong and started my M.Phil at HKUST! 🌊
Jun 22, 2025	I have successfully graduated from Tsinghua University with a Bachelor’s degree in Engineering！🎓
Feb 23, 2025	Our paper “AroMR: Decentralizing Olfactory Displays into the Environment for Olfactory-Augmented Experiences in Mixed Reality” has been accepted to CHI 2025 Late Breaking Work! 🎉
Jan 17, 2025	Our paper “Enhancing Smartphone Eye Tracking with Cursor-Based Interactive Implicit Calibration” has been accepted to CHI 2025! 🎉
Oct 11, 2024	Established a new wedsite for myself! 🥳

Publications

PreTap: Implicit Reachability Analysis and Tap Prediction for One-handed Mobile Interaction

Ziqi Liu, Ziyi Xu, Jinhe Wen, Xiangjie Tang, Qijia Shao

ACM IMWUT , 2026

[video] [project page]
Turning Phone-Surface Contacts into Probabilistic Landmarks for Indoor Localization

Xiangjie Tang, Ziqi Liu, Minhao Cui, Qijia Shao

Submitted to ACM SenSys , 2027

[project page]
Enhancing Smartphone Eye Tracking with Cursor-Based Interactive Implicit Calibration

Chang Liu, Xiangyang Wang, Chun Yu, Yingtian Shi, Chongyang Wang, Ziqi Liu, Chen Liang, Yuanchun Shi

ACM CHI , 2025

[paper] [video] [project page]
AroMR: Decentralizing Olfactory Displays into the Environment for Olfactory-Augmented Experiences in Mixed Reality

Yibo Wang, Ziqi Liu, Jiao Xue, Qi Lu

ACM CHI EA , 2025

[paper] [project page]

* More ongoing work can be found on the Projects page.