Istituto di Scienza e Tecnologie dell'Informazione     
Potortě F., Crivello A., Girolami M., Traficante E., Barsocchi P. Wi-Fi probes as digital crumbs for crowd localisation. In: IPIN 2016 - International Conference on Indoor Positioning and Indoor Navigation (Alcalá de Henares, Madrid, Spain, 4-7 October 2016). Proceedings, article n. 7743599. IEEE, 2016.
While indoor localization techniques based on Wi- Fi RSS measurements have been extensively studied, their application to eavesdropping Wi-Fi probe requests sent from mobile devices in large indoor environments, such as shopping malls, is scarce or absent in the literature. The idea behind this work is to observe Wi-Fi enabled smartphones, especially when they are not associated to a network. They periodically perform active network scanning by issuing probe requests, which are detected by networked sniffing devices produced by Cloud4WiŽ. We experimentally investigate the opportunities offered by passive gathering of Wi-Fi probes for purposes of crowd positioning in areas of interest. Our preliminary experimental setting convincingly shows that a small number of sniffing devices may be enough for analysing crowd movements in indoor areas.
URL: http://ieeexplore.ieee.org/document/7743599/
DOI: 10.1109/IPIN.2016.7743599
Subject Passive indoor localization
Crowd sensing
Wi-Fi probe eavesdropping
Wi-Fi fingerprinting
C.2.2 Network Protocols Applications
B.4.1 Data Communications Devices

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