SwissCovid: Privacy-Preserving Contact Tracing Systems

This lecture covers the SwissCovid contact tracing app, discussing its privacy implications and the decentralized approach proposed by European privacy experts. It explains how the app works, including the exchange of random messages between devices, data reduction techniques, and additional security measures. The presentation also addresses the challenges faced by the system, such as trust issues, slow adoption by healthcare authorities, and the centralized nature of the approach.