Benjamin Thiel, Kamil Kloch, Paul Lukowicz


We present a method for proximity detection with mobile phones that is based on a combination of Bluetooth communication (for the detection of coarse proximity) and sound beacons in an inaudible spectrum around 18kHz for a finer spatial resolution. The system performs a real-time recognition of personal encounters in two common situations: standing together and walking by each other. We evaluate our approach in a variety of settings ranging from office corridor, through a busy street to a shopping mall.   [Download]


@inproceedings {Thiel:Sound-based:2012:7857,
	number = {}, 
	month = {11}, 
	year = {2012}, 
	title = {Sound-based proximity detection with mobile phones}, 
	journal = {}, 
	volume = {}, 
	pages = {}, 
	publisher = {ACM, New York}, 
	author = {Benjamin Thiel, Kamil Kloch, Paul Lukowicz}, 
	keywords = {}