A. Kreskowski, J. Wagner, J. Bossert, F. Echtler MoBat: Sound-Based Localization of Multiple Mobile Devices on Everyday Surfaces Proceedings of the 2015 International Conference on Interactive Tabletops & Surfaces (ITS '15), Funchal, Madeira (bib)
	We present MoBat?, a combined hard- and software system designed to locate and track multiple unmodified mobile devices on any regular table using passive acoustic sensing. Barely audible sound pulses are emitted from mobile devices, picked up by four microphones located in the corners of the surface and processed in a low-latency pipeline to extract position data. We demonstrate an average positional accuracy and precision of about 3 cm on a table of 1 m x 2 m size, and discuss possible usage scenarios regarding proxemics and tangible interaction.
	This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each authors copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.