CrowdNotifier has been developed by the prof. Carmela Troncoso. It is a protocol that can complement manual contact tracing by efficiently notifying visitors of venues and events with SARS-CoV-2-positive attendees. It provides strong privacy and abuse- resistance, and show that it can scale to handle notification at a national scale.

The C4DT team was involved in the research and development process:

• Reference implementation to make sure the specification is complete
• Pilot at EPFL - involving installing the QRcodes in 30+ rooms at EPFL
• Administrative interface - to handle all QRcodes and send out notifications

CrowdNotifier has been implemented by the Ubique team and is now part of the SwissCovid App.

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For more information, contact the C4DT Factory