Section: New Results

Analyzing Ultrasound-based Physical Tracking Systems

Participant : Mathieu Cunche.

A trending application of ultrasound communication is the implementation of ultrasound beacons to track owners of mobile phones in stores and shopping centers. We present the analysis of an Ultrasound-based tracking application. By analyzing several mobile applications along with the network communication and sample of the original audio signal, we were able to reverse engineer the ultrasonic communications and some other elements of the system. Based on those finding we show how arbitrary ultrasonic signal can be generated and how to perform jamming. Finally we analyze a real world deployment and discuss privacy implications.