Lueks, W;
Gürses, S;
Veale, M;
Bugnion, E;
Salathé, M;
Paterson, KG;
Troncoso, C;
(2021)
CrowdNotifier: Decentralized Privacy-Preserving Presence Tracing.
Proceedings on Privacy Enhancing Technologies
, 2021
(4)
pp. 350-368.
10.2478/popets-2021-0074.
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Abstract
There is growing evidence that SARS-CoV-2 can be transmitted beyond close proximity contacts, in particular in closed and crowded environments with insufficient ventilation. To help mitigation efforts, contact tracers need a way to notify those who were present in such environments at the same time as infected individuals. Neither traditional human-based contact tracing powered by handwritten or electronic lists, nor Bluetooth-enabled proximity tracing can handle this problem efficiently. In this paper, we propose CrowdNotifier, a protocol that can complement manual contact tracing by efficiently notifying visitors of venues and events with SARS-CoV-2-positive attendees. We prove that CrowdNotifier provides strong privacy and abuse-resistance, and show that it can scale to handle notification at a national scale.
| Type: | Article |
|---|---|
| Title: | CrowdNotifier: Decentralized Privacy-Preserving Presence Tracing |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.2478/popets-2021-0074 |
| Publisher version: | https://doi.org/10.2478/popets-2021-0074 |
| Language: | English |
| Additional information: | This work is licensed under Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. The images or other third party material in this article are included in the Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit https://creativecommons.org/licenses/by-nc-nd/3.0/ |
| Keywords: | Presence tracing, proximity tracing, privacy-preserving protocols |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL SLASH UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of Laws |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10132798 |
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