Blockchain, QR codes and Your Phone: The Race to Build Vaccine Passports

There will come a time, hopefully in the near future, when you'll feel comfortable getting on a plane again. You might even stop at the lounge at the airport, head to the regional office when you land and maybe even see a concert that evening. This seemingly distant reality will depend upon vaccine rollouts continuing on schedule, an open-sourced digital verification system and, amazingly, the blockchain.

Several countries around the world have begun to prepare for what comes after vaccinations. Swaths of the population will be vaccinated before others, but that hasn't stopped industries decimated by the pandemic from pioneering ways to get some people back to work and play. One of the most promising efforts is the idea of a "vaccine passport," which would allow individuals to show proof that they've been vaccinated against COVID-19 in a way that could be verified by businesses to allow them to travel, work or relax in public without a great fear of spreading the virus.

But building a system that everyone agrees with — and can access — is no small task. There are several companies working on competing projects to verify vaccinations. But beyond that, there are more than a few hurdles that could prevent vaccine passports from succeeding, from antiquated medical records systems to interoperability issues and privacy concerns. Here's how they could actually succeed.

Competing projects, similar standards

Pretty much since the first blockchain white paper, people have been looking for perfect examples of where a distributed, immutable ledger could be valuable. There's obviously the push to use it for currencies, and companies have tried to use it for things like tracking food production and voting, but there are few use cases that have truly taken off, at least so far. "We've been working on this since 2014; we never thought that health care would be the kind of the use case that we take this mainstream," Jamie Smith, the senior director of business development at Evernym, a company focused on using the blockchain as a basis for verifying identities, told Protocol.

Smith said Evernym had been discussing its concepts with automakers, retailers, telcos, governments, loyalty companies and banks prior to the pandemic. One of those companies was IAG, the airline group that owns British Airways, which had been interested in the idea of contactless travel based on a single identity credential that follows you from the airport check-in to your gate. With the pandemic, that morphed into thinking about ways to verify that passengers have had negative COVID tests, and eventually, that they've received a vaccine. "From our perspective, it was a really easy lift to see," Smith said. "We're doing contactless travel, and we just added verifiable credentials for test results."

It's a similar genesis for IBM's Digital Health Pass initiative, which leader Eric Piscini said started about two years ago as a way to store people's entire health records in a safe, accessible platform. It also relies on the blockchain for its immutable record of proof, and both Evernym and IBM are part of an open-standards group called the Good Health Pass Collaborative, which aims to bring private credentialed vaccine records to business and people around the world. Companies are working on their own implementations of the standards, but Evernym's Smith said the data is meant to be portable from one passport to another.

Most of the companies working on passports say their systems are private by design, especially given that they're mainly working off the same open standards. In most cases, the health information only ever remains on a user's phone, but where it asks to verify that the user's information meets a system's standards — such as whether this person has had two COVID vaccines and should be allowed into an office — that information is recorded on a blockchain. "You can, using blockchain technologies, verify that someone has been tested recently, without having access to the underlying data," Piscini said. "I don't know any other technology where you can do that." (...)

Something for everyone

With so many competing efforts to become the world's digital vaccine passport, it might seem that the country is heading for some sort of VHS versus Betamax format war for proving everyone has had COVID vaccines. But given that so many of the efforts are using the same standards, and in many cases, looking to embed their tech in someone else's app rather than their own, the race might be less about the best tech winning, and more about various approaches working in different situations. 

by Mike Murphy, Protocol |  Read more:

Image: CommonPass