Covid tracer apps and overseas visitors - Michael Baker

Contact tracing apps are used around the world to slow the spread of Covid-19. But what happens when our borders open to Aussies, will they need to download our Covid tracer app to use? And with the possibility of a trans-tasman bubble just weeks away we wanted to get some extra details. Our reporter Ella Stewart asked Professor of Epidemiology at University of Otago Michael Baker what contact tracing might look like if the borders open to our friends across the ditch.