An electronic and secure automatic fare collection system with revocable anonymity for users
Arnau Vives-Guasch, Jordi Castellà‐Roca, M. Magdalena Payeras–Capellà, Macià Mut–Puigserver · 2010
Automatic Fare Collection (AFC) systems calculate the fare that the user must pay which depends on the points of entrance and exit of the system. These systems were paper-based, but the progressive introduction of Information and Communication Technologies (ICT) allows the use of electronic tickets which helps to reduce costs and it improves the control of the infrastructures. Nevertheless, these systems must be secure against possible fraud, and they must also preserve users' privacy. We propose an AFC system that offers strong privacy for honest users. The service provider can not disclose the identity of its users and, moreover, different journeys of the same user are unlinkable. However, anonymity for users could be revoked if they misbehave. This system has been designed in order to use personal mobile devices.