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Contribution Details
| Type | Master's Thesis |
| Scope | Discipline-based scholarship |
| Title | HomeScout: A Modular Bluetooth Low Energy Sensing Android App |
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| Institution | University of Zurich |
| Faculty | Faculty of Business, Economics and Informatics |
| Date | 2023 |
| Abstract Text | Bluetooth Low Energy (BLE) trackers are affordable devices that are misused for stalking attacks. Apple, for example, offers AirTags as BLE trackers. These are used by users of their ecosystem to retrieve lost items. Unfortunately, cases have come to light in which owners of an AirTag have tracked other people with the help of such a tracker. Apple reacted to this to protect their users. Android users, on the other hand, were not offered a satisfactory solution. An Android app called AirGuard from the Technical University of Darmstadt in Germany addressed this issue. The app scans in the background and informs users about trackers that are following them. Apple and AirGuard use a tracking algorithm defined by them that decides whether a tracker is following the user. In this work, an Android app is developed that allows users to customize such a tracking algorithm. This also enabled this work to evaluate through experiments how such a tracking algorithm should be configured to notify users as quickly as possible of malicious trackers. Furthermore, this app applies the tracking algorithm not only to BLE trackers but to BLE devices in general, since in principle not only BLE trackers can be used for stalking attacks. Moreover, this work investigated whether BLE trackers can be distinguished from BLE devices using Android’s BLE API. |
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