With the passing of another day, more Australians have been vaccinated against COVID. But as more and more of us get either the Pfizer vaccine or the Astra vaccine, proving it may become important as we take steps to reopen borders and the economy. One strategy that's been tried overseas in countries like Israel are what's known as vaccine passports - the idea being that to get into a movie or a gym, you need to prove you've been fully vaccinated. But on today's Coronacast, that raises both ethical and practical concerns. Also on today's show: * Can you have the injection in the bum, instead of the arm? * NSW to vaccinate border workers and families