South Korea, which has begun rolling out the COVID-19 vaccine to residents over the age of 75, has announced plans to use blockchain technology to approve future vaccine passes for vaccinated citizens.

According to Reuters, Prime Minister Chun Si-kyun said at a government meeting that the new mobile app will be used to handle digital evidence of vaccinations and is expected to be launched later in April. Blockchain technology will be used to ensure that residents can not falsify evidence that they allegedly received the injection.

“The introduction of a vaccine passport or a green corridor will only allow those who have been vaccinated to recover in everyday life,” Chang said.

Vaccine passports are also intended for international travelers, who will be supported by the application and allowed to enter the country, provided they have documentation of vaccination.

Many countries and international blocs, including China, Israel and the EU, have already adopted or expressed their willingness to use domestic vaccine passports and / or facilitate cross-border travel in the midst of the COVID-19 pandemic. Other countries, such as the United Kingdom, continue to share internal policy views on the potential pros and cons of this certification system.

Regardless of the ultimate approach to vaccine passports, the United Kingdom, like South Korea, has recognized the usefulness of blockchain technology in tackling the complex logistical challenges of vaccination itself. In addition, the Brazilian government has announced its intention to use the Hyperledger Fabric blockchain structure to keep track of its vaccinated citizens.