Title: Privacy-preserving public transport ticketing system
Authors: Milutinovic, Milica ×
Decroix, Koen
Naessens, Vincent
De Decker, Bart #
Issue Date: 2015
Host Document: Data and Applications Security and Privacy XXVIII - 29th Annual IFIP WG 11.3 Working Conference, DBSec 2015 FairFax, VA ,USA, July 13-15, 2015. Proceedings
Conference: 29th Annual IFIP WG 11.3 Working Conference on Data and Applications Security and Privacy (DBSec 2015) location:Fairfax, VA, USA date:13-15 July 2015
Abstract: The public transport ticketing systems are undergoing significant changes in recent years. The tickets can now be issued and presented in digital form, significantly improving the user experience. The digital data is also used to improve the services’ efficiency. Travelling patterns and route occupancy can be analysed to adjust the frequency and coverage of the service. However, data recorded by the providers extends the information that is needed for simple analysis. The travel passes that are issued usually contain unique identifiers, allowing to trace the movement of users, which can even be linked to their identities. In order to tackle these privacy issues, we propose a novel, privacy-preserving ticketing system, based on a scheme for issuing and redemption of unlinkable certified tokens. The design also allows offering advanced services, such as reduction plans or monthly passes, without introducing privacy concerns. Even though the travellers’ actions cannot be linked, the service providers are given assurances against possible misuse, and are able to control the usage of the issued products. Additionally, experimental evaluation shows that the system performance is adequate for practical applications.
Publication status: accepted
KU Leuven publication type: IC
Appears in Collections:Informatics Section
Computer Science Technology TC, Technology Campuses Ghent and Aalst
Technologiecluster Computerwetenschappen
× corresponding author
# (joint) last author

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