Entangled: A Case Study of Data Exchange and Actor Relationships in a Mobility Ecosystem

This chapter delves into the intricate data exchange processes and actor relationships within a mobility ecosystem in a large German city. It emphasizes the role of the public transport system as a central actor, facilitating the integration of various mobility services such as bike-sharing and car-sharing. The study examines the current challenges in customer registration processes, which involve multiple external actors and complex data requirements. It then explores the potential of self-sovereign identity (SSI) to streamline these processes, enhancing trust and efficiency. The authors propose two strategic options for integrating SSI into the ecosystem: involving external information providers or leveraging core ecosystem actors to issue verifiable credentials. The case study offers valuable insights into the practical application of SSI, highlighting the need for robust governance frameworks and the potential benefits for both service providers and customers. By analyzing the institutional arrangements and risk management strategies, the chapter contributes to the understanding of how SSI can be effectively implemented in urban mobility systems.