Projects around sensing and signal processing using the microphones and IMUs in today’s earphones and glasses.
Press Coverage [MUTE]: NAE Radio, BBC, Yahoo News, IEEE Spectrum, ACM TechNews, Daily Illini, The National, La Repubblica, New Atlas, Eureka Alert, Science Daily, ...
We explore new modalities of communication (and attacks) using inaudible audio and physical vibrations.
Backdoor shows high-frequency ultrasonic sounds can be designed to be recordable by unmodified smartphone microphones while remaining inaudible to humans.
Paper in ACM MobiSys 2017 [Slides]
Ripple shows the feasibility of using physical vibration as a new modality for information transfer, where we perform user authentification through a ring.
Another application of Ripple where we transmit live audio through vibration signal.
Press Coverage [BackDoor]: The New York Times, IEEE Spectrum, The Science Times, New Atlas, Science Daily, IEEE Signal Processing Magazine, ...
Projects are around 3D tracking of arm, wrist, and fingers using IMU sensors from smartwatches (with applications in healthcare and sports analytics).
ArmTrak demo while user is moving.
Press Coverage [MoLe]: Daily Mail, Sina News, Yahoo News, The Times of India, News.com.au, Bangkok Post, Daily Illini, ChicagoInno, Motherboard.VICE, Wareable, PhysOrg, Popular Science, TechRadar, ConsumerAffairs, EurekAlert, Security Affairs, Silicon.fr, ...
We are building practical indoor localization systems using a fusion of smartphone sensors, wireless radios, and crowd-sourcing.
UnLoc smartphone localization system is deployed in our CSL building.
WalkCompass robustly infers walking direction from smartphone IMUs wherever the phone is placed.
PhonePoint Pen tracks the 3D location of phone in the air.
Paper in ACM MobiSys 2011
Press Coverage [UnLoc]:
Duke Today ...
Press Coverage [PhonePoint Pen]: American Scientific, Slashdot, The Guardian, UK, ABCNews, Yahoo News, ScienceDaily, MSN UK, Live Science ...
We have optimized vision-based augmented reality systems to operate in real time by leveraging location information.