Thread by @NaomiOhReally

The idea of a vaccine pass is alluring to many, seeming like a get-out-of-jail free card from the pandemic.
But when you look at the practicalities, there are deep pitfalls and tradeoffs, and the resources required to do it are immense.

https://twitter.com/elizabeth_joh/status/1376200319206522885

Remember the contact-tracing apps?
They were hard enough to get off the ground and they didn't have nearly as many thorny rights and liberties questions.
I do struggle to see the proposed pan-EU system becoming a reality by this summer.

I think the countries pushing hardest for it, e.g. Greece, will probably just go ahead and introduce a vaccine exception for tourists.
And just like with test certs for travellers now, in some places recognised proof of vaccination won't be available, and in some places it will.

The current proposal is for all countries to collect the same set of data, that would then be linked up into a pan-EU interoperable database, with patient status verifiable through QR codes.
Negative tests or recovery from Covid-19 could be demonstrated as well as vaccine status

Being vaccinated, testing negative, or having recovered from Covid-19 wouldn't itself grant you anything: it would be up to each EU member state to choose how to use that data (or not), just like they currently set their own travel and restriction rules

https://twitter.com/RobTheLandi/status/1376207639307296771?s=20