Security and privacy of wireless sensing systems (mmWave and WiFi)
User authentication and spoofing attacks on sensing-based systems
Mobile and IoT security; secure and efficient on-device deep learning
Contactless and mobile healthcare
Research News
[2026]NEWOur paper "WiGuard: Generative AI-Driven WiFi-Based In-Baggage Object Detection and Imaging with Virtual Antenna Arrays" has been accepted by IEEE CNS 2026.
[2026]NEWOur paper "Attacking mmWave-enabled Chest Vibration Sensing via Actuator-induced Mimicry" has been accepted by IEEE INFOCOM 2026.
[Dec. 2025]NEWOur paper "mmWave Testbed for Data Collection and Model Sharing in Contactless Concentration Monitoring System" received the Best Testbed Award at the ACM/IEEE Symposium on Edge Computing (SEC 2025).
[2025]I served as Workshop Chair of ACM/IEEE SEC 2025 and Publicity Chair of ACM WiSec 2025.
[Oct. 2024]Our paper "mmPalm: Unlocking Ubiquitous User Authentication through Palm Recognition with mmWave Signals" received the Best Paper Award Runner-up at IEEE CNS 2024.
[2024]Our book "Mobile Technologies for Smart Healthcare System Design" was published by Springer.
[Sept. 2023]Our paper "Towards Efficient Privacy-Preserving Top-k Trajectory Similarity Query" received the Best Paper Award Runner-up at IEEE MASS 2023.
[July 2022]Our paper "mmFit: Low-Effort Personalized Fitness Monitoring Using Millimeter Wave" received the Best Paper Award Runner-up at IEEE ICCCN 2022 [certificate].
Earlier news
[Nov. 2019]Our paper "WiFi-enabled Automatic Eating Moment Monitoring Using Smartphones" received the Best Paper Award at EAI HealthyIoT 2019.
[Nov. 2018]Our paper "WristSpy: Snooping Passcodes in Mobile Payment Using Wrist-worn Wearables" was accepted by IEEE INFOCOM 2019.
[Nov. 2018]Our poster "Inferring Mobile Payment Passcodes Leveraging Wearable Devices" received the Best Poster Award Runner-up at ACM MobiCom 2018.
[July 2017]Our paper "WiFi-Enabled Smart Human Dynamics Monitoring" was accepted by ACM SenSys 2017.
[Nov. 2016]Our paper "FitCoach: Virtual Fitness Coach Empowered by Wearable Mobile Devices" was accepted by IEEE INFOCOM 2017.
[Oct. 2016]Our poster "Automatic Personal Fitness Assistance through Wearable Mobile Devices" received the Best Poster Award Runner-up at ACM MobiCom 2016.
Xiaonan Guo, Yan Wang, Jerry Cheng, Yingying (Jennifer) Chen.
Mobile Technologies for Smart Healthcare System Design.Springer, 2024. ISBN 978-3-031-57344-6.
Yucheng Xie, Xiaonan Guo, Yan Wang, Jerry Cheng, Yingying Chen.
Universal Targeted Adversarial Attacks Against mmWave-Based Human Activity Recognition.
In Network Security Empowered by Artificial Intelligence, Springer, 2024.
Journal Papers
Tianming Zhao, Yucheng Xie, Yan Wang, Jerry Cheng, Xiaonan Guo, Bin Hu, Yingying Chen.
A Survey of Deep Learning on Mobile Devices: Applications, Optimizations, Challenges, and Research Opportunities.Proceedings of the IEEE, 110(3): 334–354, 2022.
Yilin Yang, Haocong Wang, Ruizhe Jiang, Xiaonan Guo, Jerry Cheng, Yingying Chen.
A Review of IoT-Enabled Mobile Healthcare: Technologies, Challenges, and Future Trends.IEEE Internet of Things Journal, 9(12): 9478–9502, 2022.
Xiaonan Guo, Jian Liu, Yingying Chen.
When Your Wearables Become Your Fitness Mate.Elsevier Smart Health, 2020.
Xiaonan Guo, Jian Liu, Cong Shi, Hongbo Liu, Yingying Chen, Mooi Choo Chuah.
Device-free Personalized Fitness Assistant Using WiFi.Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT), 2018.
Chen Wang, Xiaonan Guo, Yingying Chen, Yan Wang, Bo Liu.
Personal PIN Leakage from Wearable Devices.IEEE Transactions on Mobile Computing (TMC), 2017.
Yunhuai Liu, Dian Zhang, Xiaonan Guo, Min Gao, Zhong Ming, Lei Yang, Lionel M. Ni.
RSS-based Ranging by Leveraging Frequency Diversity to Distinguish the Multiple Radio Paths.IEEE Transactions on Mobile Computing (TMC), 2017.
Haochao Li, Eddie C. L. Chan, Xiaonan Guo, Jiang Xiao, Kaishun Wu, Lionel M. Ni.
Wi-Counter: Smartphone-based People Counter Using Crowdsourced WiFi Signal Data.IEEE Transactions on Human-Machine Systems (THMS), 2015.
Xiaonan Guo, Dian Zhang, Kaishun Wu, Lionel M. Ni.
MODLoc: Localizing Multiple Objects in Dynamic Indoor Environment.IEEE Transactions on Parallel and Distributed Systems (TPDS), 2014.
Dian Zhang, Yunhuai Liu, Xiaonan Guo, Lionel M. Ni.
RASS: A Real-time, Accurate, and Scalable System for Tracking Transceiver-free Objects.IEEE Transactions on Parallel and Distributed Systems (TPDS), 2013.
Conference Papers and Posters
NEWZejun Xu, Weiyi Jin, Xiaonan Guo, Yan Wang, Cong Shi, Yingying Chen.
WiGuard: Generative AI-Driven WiFi-Based In-Baggage Object Detection and Imaging with Virtual Antenna Arrays.
In Proceedings of the IEEE Conference on Communications and Network Security (CNS), 2026.
NEWXiaonan Guo, Yi Wei, Yuan Ge, Yucheng Xie, Yan Wang, Jerry Cheng, Yingying Chen.
Attacking mmWave-enabled Chest Vibration Sensing via Actuator-induced Mimicry.
In Proceedings of the IEEE International Conference on Computer Communications (INFOCOM), 2026.
NEWXiaonan Guo, Yuan Ge, Yi Wei, Wenrui Zhao, Yucheng Xie, Yan Wang, Jerry Cheng, Yingying Chen.
mmWave Testbed for Data Collection and Model Sharing in Contactless Concentration Monitoring System.
In Proceedings of the ACM/IEEE Symposium on Edge Computing (SEC), 2025.
Best Testbed Award.
NEWYucheng Xie, Xiaonan Guo, Yan Wang, Jerry Cheng, Tianfang Zhang, Yingying Chen, Yuan Ge, Yi Wei.
Exploring Cross-Environment Modeling and Robustness in Palm-based User Authentication Using mmWave Testbed.
In Proceedings of the ACM/IEEE Symposium on Edge Computing (SEC), 2025.
Yuan Ge, Yi Wei, Xiaonan Guo, Yucheng Xie, Yan Wang, Jerry Cheng, Yingying Chen.
Towards Contactless Human Concentration Monitoring Using mmWave Signals.
In Proceedings of the IEEE International Conference on Collaboration and Internet Computing (CIC), 2024.
Yucheng Xie, Xiaonan Guo, Yan Wang, Jerry Q. Cheng, Ting Zhang, Yingying Chen, Yi Wei, Yuan Ge.
mmPalm: Unlocking Ubiquitous User Authentication through Palm Recognition with mmWave Signals.
In Proceedings of the IEEE Conference on Communications and Network Security (CNS), 2024.
Best Paper Award Runner-up.
Yucheng Xie, Tianfang Zhang, Xiaonan Guo, Yan Wang, Jerry Cheng, Yingying Chen, Yi Wei, Yuan Ge.
Poster: Palm-Based User Authentication Through mmWave.
In Proceedings of the IEEE International Conference on Distributed Computing Systems (ICDCS), 2024.
Kelai Yi, Yuefeng Chen, Yuchen Su, Xiong Li, Hongbo Liu, Huan Dai, Xiaonan Guo, Yingying Chen.
Towards Efficient Privacy-Preserving Top-k Trajectory Similarity Query.
In Proceedings of the IEEE International Conference on Mobile Ad Hoc and Smart Systems (MASS), 2023.
Best Paper Award Runner-up.
Bin Hu, Yan Wang, Jerry Cheng, Tianming Zhao, Yucheng Xie, Xiaonan Guo, Yingying Chen.
Secure and Efficient Mobile DNN Using Trusted Execution Environments.
In Proceedings of the ACM Asia Conference on Computer and Communications Security (AsiaCCS), 2023.
Yucheng Xie, Ruizhe Jiang, Xiaonan Guo, Yan Wang, Jerry Cheng, Yingying Chen.
mmFit: Low-Effort Personalized Fitness Monitoring Using Millimeter Wave.
In Proceedings of the IEEE International Conference on Computer Communications and Networks (ICCCN), 2022.
Best Paper Award Runner-up.
Yucheng Xie, Ruizhe Jiang, Xiaonan Guo, Yan Wang, Jerry Cheng, Yingying Chen.
Poster: Universal Targeted Attacks against mmWave-based Human Activity Recognition System.
In Proceedings of the ACM International Conference on Mobile Systems, Applications, and Services (MobiSys), 2022.
Cong Shi, Tianming Zhao, Yucheng Xie, Tianfang Zhang, Yan Wang, Xiaonan Guo, Yingying Chen.
Environment-independent In-baggage Object Identification Using WiFi Signals.
In Proceedings of the IEEE International Conference on Mobile Ad Hoc and Smart Systems (MASS), 2021.
Bin Hu, Tianming Zhao, Yucheng Xie, Yan Wang, Xiaonan Guo, Jerry Cheng, Yingying Chen.
MIXP: Efficient Deep Neural Networks Pruning for Further FLOPs Compression via Neuron Bond.
In Proceedings of the International Joint Conference on Neural Networks (IJCNN), 2021.
Cong Shi, Xiaonan Guo, Ting Yu, Yingying Chen, Yucheng Xie, Jian Liu.
Mobile Device Usage Recommendation based on User Context Inference Using Embedded Sensors.
In Proceedings of the IEEE International Conference on Computer Communications and Networks (ICCCN), 2020.
Zhenzhe Lin, Yucheng Xie, Xiaonan Guo, Yanzhi Ren, Yingying Chen, Chen Wang.
WiEat: Fine-grained Device-free Eating Monitoring Leveraging Wi-Fi Signals.
In Proceedings of the IEEE International Conference on Computer Communications and Networks (ICCCN), 2020.
Hongbo Liu, Zhihua Li, Yucheng Xie, Ruizhe Jiang, Yan Wang, Xiaonan Guo, Yingying Chen.
LiveScreen: Video Chat Liveness Detection Leveraging Skin Reflection.
In Proceedings of the IEEE International Conference on Computer Communications (INFOCOM), 2020.
Xin Yang, Jian Liu, Yingying Chen, Xiaonan Guo, Yucheng Xie.
MU-ID: Multi-user Identification Through Gaits Using Millimeter Wave Radios.
In Proceedings of the IEEE International Conference on Computer Communications (INFOCOM), 2020.
Zhenzhe Lin, Yucheng Xie, Xiaonan Guo, Chen Wang, Yanzhi Ren, Yingying Chen.
WiFi-enabled Automatic Eating Moment Monitoring Using Smartphones.
In Proceedings of the EAI International Conference on IoT Technologies for HealthCare (HealthyIoT), 2019.
Best Paper Award.
Hongbo Liu, Zhihua Li, Yucheng Xie, Ruizhe Jiang, Yan Wang, Xiaonan Guo, Yingying Chen.
Poster: Video Chat Scam Detection Leveraging Screen Light Reflection.
In Proceedings of the ACM International Conference on Mobile Computing and Networking (MobiCom), 2019.
Chen Wang, Jian Liu, Xiaonan Guo, Yan Wang, Yingying Chen.
WristSpy: Snooping Passcodes in Mobile Payment Using Wrist-worn Wearables.
In Proceedings of the IEEE International Conference on Computer Communications (INFOCOM), 2019.
Chen Wang, Jian Liu, Xiaonan Guo, Yan Wang, Yingying Chen.
Poster: Inferring Mobile Payment Passcodes Leveraging Wearable Devices.
In Proceedings of the ACM International Conference on Mobile Computing and Networking (MobiCom), 2018.
Best Poster Award Runner-up.
Xiaonan Guo, Bo Liu, Cong Shi, Hongbo Liu, Yingying Chen, Mooi Choo Chuah.
WiFi-Enabled Smart Human Dynamics Monitoring.
In Proceedings of the ACM Conference on Embedded Networked Sensor Systems (SenSys), 2017.
Xiaonan Guo, Jian Liu, Yingying Chen.
FitCoach: Virtual Fitness Coach Empowered by Wearable Mobile Devices.
In Proceedings of the IEEE International Conference on Computer Communications (INFOCOM), 2017.
Xiaonan Guo, Jian Liu, Yingying Chen.
Poster: Automatic Personal Fitness Assistance through Wearable Mobile Devices.
In Proceedings of the ACM International Conference on Mobile Computing and Networking (MobiCom), 2016.
Best Poster Award Runner-up.
Chen Wang, Xiaonan Guo, Yan Wang, Yingying Chen, Bo Liu.
Friend or Foe? Your Wearable Devices Reveal Your Personal PIN.
In Proceedings of the ACM Asia Conference on Computer and Communications Security (AsiaCCS), 2016.
Best Paper Award.
Xiaonan Guo, Kaishun Wu, Qian Zhang.
ADAS: Adjust Directional Antenna with Sensor Hints.
In Proceedings of the IEEE International Conference on Parallel and Distributed Systems (ICPADS), 2014.
Xiaonan Guo, Eddie C. L. Chan, Ce Liu, Kaishun Wu, Siyuan Liu, Lionel M. Ni.
ShopProfiler: Profiling Shops with Crowdsourcing Data.
In Proceedings of the IEEE International Conference on Computer Communications (INFOCOM), 2014.
Luong Trung Tuan, Youngki Lee, Archan Misra, Xiaonan Guo, Rajesh Krishna Balan.
Wi-Fi Based Indoor Localization Is Not Easy.
In Proceedings of the ACM International Workshop on Mobile Computing Systems and Applications (HotMobile), 2014.
Xiaonan Guo, Dian Zhang, Lionel M. Ni.
Localizing Multiple Objects in an RF-based Dynamic Environment.
In Proceedings of the IEEE International Conference on Distributed Computing Systems (ICDCS), 2012.
Dian Zhang, Yunhuai Liu, Xiaonan Guo, Min Gao, Lionel M. Ni.
On Distinguishing the Multiple Radio Paths in RSS-based Ranging.
In Proceedings of the IEEE International Conference on Computer Communications (INFOCOM), 2012.
Awards and Honors
Best Testbed Award, ACM/IEEE Symposium on Edge Computing (SEC), 2025
Best Paper Award Runner-up, IEEE Conference on Communications and Network Security (CNS), 2024
Best Paper Award Runner-up, IEEE International Conference on Mobile Ad Hoc and Smart Systems (MASS), 2023
Best Paper Award Runner-up, IEEE International Conference on Computer Communications and Networks (ICCCN), 2022
Best Paper Award, EAI International Conference on IoT Technologies for HealthCare (HealthyIoT), 2019
Best Poster Award Runner-up, ACM MobiCom, 2016 and 2018
Best Paper Award, ACM Asia Conference on Computer and Communications Security (AsiaCCS), 2016
IEEE/ACM Transactions on Networking; IEEE Transactions on Mobile Computing; IEEE Transactions on Parallel and Distributed Systems; IEEE Transactions on Information Forensics and Security; IEEE Transactions on Wireless Communications; IEEE Transactions on Vehicular Technology; IEEE Transactions on Biomedical Engineering; IEEE Internet of Things Journal; Elsevier Computers & Security; MDPI Sensors