Unlocking the Potential of Decentralised Digital Identification Systems for Smart Cities
Carla O. Castanho, Rafael Zancan Frantz, Marcelo P. Chequin, Sandro Sawicki, Fabricia Carneiro Roos Frantz, Carlos Molina-Jiménez, Jon Crowcroft, Timothy Hobson · 2025
We argue that the absence of central authorities and trust decentralisation in decentralised ID systems enable them to achieve openness, transparency, scalability, privacy and reliability. These are highly desirable properties in several application domains including smart city services. Decentralised ID systems are only emerging. Several candidates exist at an experimental stage of development, awaiting deployment and evaluation in realistic applications. In this paper, we discuss Trustchain. We explain the features that have motivated us to use it in the implementation of smart city services. Also, we share our experience gained from its local deployment.