The "vaccine passport" offers a glimpse of how travel might be expedited in future. Rather than queue to show a booklet to a weary official, enter everything into a QR code before boarding. The authorities have more time to scrutinize. Machines scan the QR codes on landing. Zoom.
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@davidfrum I ‘m in Italy for @HostMilano and the Vaccine passport is required to enter restaurants and the Trade Show. It works great and it is a great comfort to know that everyone around you is vaccinated as well.