Privacy Friendly E-Ticketing For Public Transport
This addresses privacy concerns for public transport users, but it appears incremental as it builds on existing ticketing systems without claiming major breakthroughs.
The paper tackles the problem of implementing privacy-friendly e-ticketing for public transport by proposing two protocols inspired by existing systems, one emulating paper tickets and another using a pay-as-you-go approach with smartphone-based storage, but it does not report concrete results or numbers.
This paper studies how to implement a privacy friendly form of ticketing for public transport in practice. The protocols described are inspired by current (privacy invasive) public transport ticketing systems used around the world. The first protocol emulates paper based tickets. The second protocol implements a pay-as-you-go approach, with fares determined when users check-in and check-out. Both protocols assume the use of a smart phone as the main user device to store tickets or travel credit. We see this research as a step towards investigating how to design commonly used infrastructure in a privacy friendly manner in practice, paying particular attention to how to deal with failures.