Tracking unmodified smartphones using wi-fi monitors

  title={Tracking unmodified smartphones using wi-fi monitors},
  author={A. B. M. Musa and Jakob Eriksson},
Smartphones with Wi-Fi enabled periodically transmit Wi-Fi messages, even when not associated to a network. In one 12-hour trial on a busy road (average daily traffic count 37,000 according to the state DOT), 7,000 unique devices were detected by a single road-side monitoring station, or about 1 device for every 5 vehicles. In this paper, we describe a system for passively tracking unmodified smartphones, based on such Wi-Fi detections. This system uses only common, off-the-shelf access point… CONTINUE READING
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