Yunqi Guo（郭运奇）

Ho Sin Hang Engineering Building, CUHK

Shatin, N.T., Hong Kong

I am a postdoctoral fellow at CUHK, working with Prof. Guoliang Xing in the CUHK AIoT Lab. Before that, I earned my Ph.D. in Computer Science at UCLA under Prof. Songwu Lu. My work sits at the intersection of AR/mobile systems, visual–language interaction, and intelligent sensing, always from a user‑centered perspective. I push forward two complementary agendas: accessibility tech that simplifies everyday interactions and AIoT‑based eldercare systems that enable healthy, independent aging. By pairing rigorous systems research with field‑based design, I translate new computing ideas into practical impact.

I also hold an M.S. from UCLA (2018) and a B.S. from Shanghai Jiao Tong University (2016), where I worked with Prof. Xinbing Wang.

Fun facts. I regularly visit accessibility‑focused organizations to keep my research grounded. I’m an avid photographer—shots from my Yunqi Guo’s Gallery often become my desktop wallpapers—and I unwind by off‑roading and motorcycling.

news

Apr 13, 2026	✈️ Attended CHI 2026 in Barcelona, Spain! Presented our poster Beyond Transactions. Excited about deeper deployment and exploration to support rural eldercare.
Apr 1, 2026	🎉 Honored to be elected as a Program Committee member of ACM ASSETS! Looking forward to contributing to the accessibility and eldercare research community. Please consider submitting your work!
Mar 14, 2026	🎤 Gave an invited talk at CUHK CSLDS. Many thanks to Prof. Yiu Kun-Man Chris for the warm hosting — it was a wonderful experience discussing and exchanging ideas with the Hong Kong Deaf community!
Nov 6, 2025	🏊 Thrilled that our AquaScan paper received the Best Paper Award @ MobiCom 2025! Proud to have contributed my butterfly stroke data!
Oct 13, 2025	🎤 Honored to be invited to give a keynote talk at the MIMSVAI workshop at UbiComp/ISWC 2025. Feel free to reach out if you’d like to discuss assistive AR!

latest posts

Jun 15, 2024	Why Spatial Photos and Videos Offer More Immersion than 3D
Jun 15, 2024	Why We Keep Sponsoring Accessibility in Tech Conferences
Aug 19, 2021	Install Mediapipe in Blender

selected publications

2025

MobiCom’25
Best Paper Award

AquaScan: A Sonar-based Underwater Sensing System for Human Activity Monitoring

Haozheng Hou, Bowen Zheng, Sitong Cheng, and 6 more authors

In Proceedings of the 31st Annual International Conference on Mobile Computing and Networking, 2025
MobiSys’25
Rising Star

Assistive AR System for Enhancing Human-Human and Human-Environment Interactions

Yunqi Guo

In Proceedings of the 23rd Annual International Conference on Mobile Systems, Applications and Services - Rising Star Forum, 2025

PDF Website
IMWUT’25

Socialmind: Llm-based proactive ar social assistive system with human-like perception for in-situ live interactions

Bufang Yang*, Yunqi Guo*, Lilin Xu*, and 4 more authors

Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies, 2025

2023

MobiCom’23

Sign-to-911: Emergency Call Service for Sign Language Users with Assistive AR Glasses

Yunqi Guo, Jinghao Zhao, Boyan Ding, and 6 more authors

MobiCom, 2023

Abs Slides

Sign-to-911 offers a compact mobile system solution to fast and runtime American Sign Language (ASL) and English translations. It is designated as 911 call services for ASL users with hearing disabilities upon emergencies. It enables bidirectional translations of ASL-to-English and English-to-ASL. The signer wears the AR glasses, runs Sign-to-911 on his/her smartphone and glasses, and interacts with a 911 operator. The design of Sign-to-911 departs from the popular deep learning based solution paradigm, and adopts simpler traditional AI/machine learning (ML) models. The key is to exploit ASL linguistic features to simplify the model structures and improve accuracy and speed. It further leverages recent component solutions from graphics, vision, natural language processing, and AI/ML. Our evaluation with six ASL signers and 911 call records has confirmed its viability.
TMC’23

LDRP: Device-Centric Latency Diagnostic and Reduction for Cellular Networks without Root

Zhaowei Tan, Jinghao Zhao, Yuanjie Li, and 3 more authors

IEEE TMC, 2023

2021

CNS’21

A Model Obfuscation Approach to IoT Security

Yunqi Guo, Zhaowei Tan, Kaiyuan Chen, and 2 more authors

IEEE CNS, 2021
ACSAC’21

On Key Reinstallation Attacks over 4G LTE Control-Plane: Feasibility and Negative Impact

Muhammad Taqi Raza, Yunqi Guo, Songwu Lu, and 1 more author

ACM ACSAC, 2021
MobiCom’21

SecureSIM: Rethinking Authentication and Access Control for SIM/eSIM

Jinghao Zhao, Boyan Ding, Yunqi Guo, and 2 more authors

AMC MobiCom, 2021
MobiCom’21

Data-Plane Signaling in Cellular IoT: Attacks and Defense

Zhaowei Tan, Boyan Ding, Jinghao Zhao, and 2 more authors

ACM MobiCom, 2021
MobiCom’21

Experience: a Five-Year Retrospective of MobileInsight

Yuanjie Li, Chunyi Peng, Zhehui Zhang, and 9 more authors

ACM MobiCom, 2021

2020

ICCCN’20

Towards Model-Centric Security for IoT Systems

Yunqi Guo, Zhaowei Tan, and Songwu Lu

IEEE ICCCN, 2020