We developed a mobile application called, 'Covid 19 Vaccination Certificate App' and we would like to make an Animated Explainer video about it. The basic concept is that a person goes to a pharmacist and tries to get a vaccine jab. The pharmacist then scans a vaccine bottle using the app, inject the vaccine to the person and finally issue a certificate via the app. The person then goes anywhere with the app and shows the certificate to work, travel etc. It's basically an immunity passport. The architecture of this app is attached to this project.
a) overall summary of our related work: https://blockchain.open.ac.uk/ (features a lot about the COVID-19 work)
b) video presentation from May: https://www.facebook.com/watch/?v=640416890017240 [no login required] also available at http://stadium.open.ac.uk/stadia/preview.php?s=29&whichevent=3512
c) Slideshare slide highlights from the above presentation https://www.slideshare.net/meisenstadt/covid19-antibody-testvaccination-certificates-theres-an-app-for-that (note that although this presentation is largely 'antibody test' focused becasue the work was done in March/April, the underlying infrastructure is identical for vaccination certificates, as we point out in the talk; also slides 62-72 highlight the supply-chain issues involved in off-site lab testing, which you might find of interest).