If you want to travel overseas in the future you may have to show you've been vaccinated against COVID-19.
The boss of the world's busiest airport for international passengers has said Covid passports are the only way to restart mass foreign travel.
Dubai Airports chief executive Paul Griffiths told the BBC: "I don't think there is an alternative."
Critics of the digital systems argue they discriminate against those who cannot get vaccinated.
But Mr Griffiths says he is a complete supporter of the documents, which he says are "inevitable".
"I think the problem is not the vaccine passport and its discrimination. It's the need to roll things out and have a proper globally equitable vaccine programme," he said.
The World Health Organisation and World Travel & Tourism Council are among those opposed to vaccine passports amid fears they will create a "two-tier society".
Last month, Dr Mike Ryan from the WHO repeated concerns about the ethical and fairness issues surrounding vaccine passports.
"They do need to be considered, especially in a world where vaccine is distributed in such a grossly inequitable way," he said.
Mr Griffiths wants that number to rise again: "We need to get into risk management rather than risk avoidance."
He added: "I just don't think the world can survive without that mobility for much longer, certainly socially and economically, but you can understand why countries around the world are being very conservative. The last thing any politician wants is a surge of infection on their turf."