University of Twente Student Theses


The analysis of passive Wi-Fi tracking

Bakker, W. (2016) The analysis of passive Wi-Fi tracking.

[img] PDF
Abstract:Nowadays almost everyone has a smartphone. Smartphones are sending a lot of Wi-Fi packages. These packages are send even when they are not connected to a Wi-Fi network. With all the information that smartphones are sending, it should be possible to track and count all the phones and say something about the amount of people in an area. To get an inside in the Wi-Fi behavior of a smartphone, four different phones are analyzed. Every phone is tested in different circumstances. Since apps might change the behavior of a phone, additionally, different apps were tested in these circumstances as well to see if apps will increase the amount of Wi-Fi packages. Not only have the tests been executed in a controlled environment, they have been accomplished in an uncontrolled environment as well. In a 3-hour measurement, more than 12.500 packages of unknown devices are captured and analyzed. The results show interesting results, especially when it comes to iPhones. It seems that some iPhones are not always sending the real MAC-address of the phone when dispatching Wi-Fi packages. iPhones can send locally administered MAC-addresses. These addresses are random and switched over time. Thus one iPhone can send multiple MAC-addresses. A measurement has been performed to count this changing of addresses and get an insight in the frequency of changing. With this information, more knowledge has been gained over the amount of iPhones in an area. This paper will show that is possible to track people by capturing all packages that their smartphone sends and how this is done.
Item Type:Essay (Bachelor)
Bluemark, Enschede, The Netherlands
Faculty:EEMCS: Electrical Engineering, Mathematics and Computer Science
Subject:53 electrotechnology
Programme:Electrical Engineering BSc (56953)
Link to this item:
Export this item as:BibTeX
HTML Citation
Reference Manager


Repository Staff Only: item control page