Abstract
Bluetooth data is used as the main method for contact tracing with Smittestopp. When two active devices are within Bluetooth range, they will record the ID of the paired device, along with information about the received signal quality. In this chapter, we describe how this method is implemented in Smittestopp, and how Bluetooth data is processed and analysed, to determine if an encounter between two users should be considered a qualified contact with a risk of contamination.We show that distance estimation based on Bluetooth signals is challenging due to differences between devices, lack of information on transmit power and varying environmental factors. Based on this experience, we propose a simple rule for identifying contacts based on received signal strength combined with information about the operating system type.
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Open Access This chapter is licensed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.
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Elmokashfi, A., Kvalbein, A. (2022). Chapter 5 Using Bluetooth for contact tracing. In: Elmokashfi, A., Lysne, O., Naumova, V. (eds) Smittestopp − A Case Study on Digital Contact Tracing. Simula SpringerBriefs on Computing, vol 11. Springer, Cham. https://doi.org/10.1007/978-3-031-05466-2_5
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DOI: https://doi.org/10.1007/978-3-031-05466-2_5
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Publisher Name: Springer, Cham
Print ISBN: 978-3-031-05465-5
Online ISBN: 978-3-031-05466-2
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