Research
We build technologies that solve real-world problems at the intersection of sensing, systems, and intelligence. Our primary application domains are smart transportation, healthcare, and human–computer interaction.
Multimodality
The world is enriched by a variety of signals. We explore magnetic fields and beyond as new media for tasks that were not possible before.
MagX · MAGIC · MagDot · METRO · MagLens · Polaris
Security
With richer sensing capabilities come new attack surfaces. We believe that with great power comes greater responsibility.
DualStrike · VeFi · LibreCAN
Interactivity
We build systems people directly interact with, so we can augment human activity and bring sensing into the loop of daily life.
MagDesk · μTouch · MagX · MagDelta
Project Demos
Click any thumbnail to watch the demo or visit the project page.
Publications
Underlined authors are direct advisees · * denotes co-primary authors
SenSys 2026
MagLens: Bringing Mobile, Fine-Grained Imaging to Ferrous Building Structures
Visualizing hidden ferromagnetic objects (e.g., rebars inside walls) using mobile magnetic imaging — enabling safety-critical structural inspection.
PerCom 2026
μTouch: Enabling Accurate, Lightweight Self-Touch Sensing with Passive Magnets
Self-touch gesture recognition via a novel magnetic sensing platform — nuanced facial touches, subtle finger scratches, and beyond.
NDSS 2026
DualStrike: Accurate, Real-time Eavesdropping and Injection of Keystrokes on Commodity Keyboards
First attack scheme that simultaneously listens and injects on commodity keyboards via magnetic sensing.
IJHCI 2025
Towards Extended Interaction with Differential Magnetic Tracking and Deep Learning
Overcomes initial parameter sensitivity of the LM algorithm, expanding magnetic sensing usability for mobile scenarios.
MobiCom 2025
Bridge: Enabling BLE Direction Finding Feature Compatible with All Bluetooth Devices
Backward compatibility of the BLE v5.1 direction finding feature with legacy BLE devices.
UbiComp 2025 🏆 Distinguished Paper Award
MagDesk: Interactive Tabletop Workspace Based on Passive Magnetic Tracking
Real-time 3D tracking of passive magnets embedded in tabletop objects enabling rich interaction.
MobiCom 2024
Polaris: Accurate, Vision-free Fiducials for Mobile Robots with Magnetic Constellation
World's first invisible fiducial tag for robots using magnetic sensing — enabling pose calibration and navigation without cameras.
UbiComp 2024
MagDot: Drift-free, Wearable Joint Angle Tracking at Low Cost
First wearable system for drift-free joint tracking. Accuracy: 2.72°, 4.14°, 4.61° for elbow, knee, and shoulder.
AIoTSys @ MobiSys 2024
Implementation and Benchmark of Magnetic Tracking on Mobile Platforms
Deployment of magnetic tracking on commodity Android smartphones — energy-efficient and highly effective.
SenSys 2023
METRO: Magnetic Road Markings for All-weather, Smart Roads
Magnetic encoding of road markings that remain visible regardless of weather — tested on real-world roads.
VehicleSec 2023 🏆 Best Paper Award
Guess Which Car Type I Am Driving: Information Leak via Driving Apps
Leveraging smartphone sensor data to infer vehicle type — a new privacy leak in driving apps.
MobiCom 2022
Automatic Calibration of Magnetic Tracking
MAGIC: systematic framework to automatically calibrate soft- and hard-iron disturbances for a MEMS magnetometer array.
MobiSys 2022
Enabling Software-defined PHY for Backscatter Networks
First software-defined PHY enabling agile reprogrammability in wireless backscatter networks.
MobiCom 2021
MagX: Wearable, Untethered Hands Tracking with Passive Magnets
First untethered, mobile magnetic tracking platform for fine-grained hand tracking — AR/VR interaction and health monitoring.
UbiComp 2021
Authenticating Drivers Using Automotive Batteries
B-Auth: driver authentication via battery voltage patterns correlated with driving behavior.
SECON 2022
DETROIT: Data Collection, Translation and Sharing for Rapid Vehicular App Development
Open-source, vehicle-agnostic framework for vehicular data collection, translation and sharing.
UbiComp 2019
TurnsMap: Enhancing Traffic Safety with Crowdsensing and Deep Learning
IoT + AI framework for detecting safe left turns — democratizing traffic safety information for navigation apps.
CCS 2019
LibreCAN: Automated CAN Message Translator
Automated translation of in-vehicle CAN data — making the data flow in cars transparent to developers.
CoNEXT 2017
Locating and Tracking BLE Beacons with Smartphones
LocBLE: fine-grained location of BLE beacons using commodity smartphones. Collaborative work with Hewlett Packard Labs.
MobiSys 2015
Invisible Sensing of Vehicle Steering with Smartphones
V-Sense: vehicle steering detection middleware running on commodity smartphones without additional sensors.
CCS 2014
Vulnerability and Protection of Channel State Information in Multiuser MIMO Networks
Sniff and power attacks exploiting plaintext CSI feedback in MU-MIMO — and defenses against them.
