Several organisations are working on a vaccine passport. Qantas has already announced that it will start requiring coronavirus shots for all passengers on its international flights. But, as with most things during this seemingly unending pandemic, the long answer is complicated. There is no widely accepted digital immunity passport yet. Travellers remain divided on whether to get vaccinated for the coronavirus. And there's no agreement on whether proof of having received the coronavirus vaccine should be required to travel. CDC.GOV An example of a "yellow card" used to show yellow fever vaccination. At the moment, there's no Yellow Card equivalent for Covid-19, and since the vaccines are so new, it would be impractical. In the United States, vaccine recipients receive a small white card called a Covid-19 vaccination record card that documents inoculation.