Data Story
In a proof of concept COVID Check-in system, we could take the site title/address from the Current COVID Exposure Sites dataset and match it with the checkins people carry out, and demonstrate how we can make contact details available to health authorities when needed while notifying citizens that their data was used.
An Ethereum Smart Contract can guarantee that your data was not accessed if you were not notified, PROVING that your data was not used. This is the power of a trustless system.
To productionise this project an extension to the Service Victoria check-in app would be required. There would be a public/open-source component (and the Ethereum Smart Contract is public by definition). There is also potential to explore leveraging existing systems like Metamask or Veramo.