450개 이상 항공사 , 블록체인 기반 백신여권 사용 가능

In April, travelers at London’s Heathrow airport had to wait as long as six hours to be cleared to fly, a result of airline agents struggling to make sense of the various Covid-19 health clearances travelers were presenting. The backend technology authenticates credentials against requirements of each country.

More than 450 airlines can now use IBM’s blockchain-based vaccine passport

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