Thread by @jonworth

OK, all previous tweets about UK COVID QR codes and 🇩🇪🇫🇷🇮🇪 apps *deleted*, because this situation is so very messy... and I am going to try to set the record straight in this thread instead

This stuff is important, and understanding it is complex, so bear with me

🧵

This applies to people vaccinated by the NHS in 🏴󠁧󠁢󠁥󠁮󠁧󠁿 and 🏴󠁧󠁢󠁷󠁬󠁳󠁿 only. 🏴󠁧󠁢󠁳󠁣󠁴󠁿 and Northern Ireland do not issue QR codes to those vaccinated, so this is not applicable to them

It applies to those people travelling 🇬🇧 to 🇪🇺 & 🇨🇭, and NOT to people travelling to 🇬🇧

Scan NHS 🏴󠁧󠁢󠁥󠁮󠁧󠁿🏴󠁧󠁢󠁷󠁬󠁳󠁿 vaccination cert QR with:

🇩🇪 Corona-Warn-App
🤖 play.google.com/store/apps/det…
iOS apps.apple.com/de/app/corona-…

🇮🇪 COVID Tracker Ireland
🤖 play.google.com/store/apps/det…
iOS apps.apple.com/de/app/covid-t…

🇫🇷 TousAntiCovid
🤖 play.google.com/store/apps/det…
iOS apps.apple.com/us/app/tousant…

it IMPORTS

... and it all looks like everything is fine.

* BUT *

The EU Digital COVID Certificate also - sensibly - has a verification system

There are 2 apps I've found to check whether a EU Digital COVID Certificate is valid or not

🇩🇪 CovPass Check
🤖 play.google.com/store/apps/det…
iOS apps.apple.com/de/app/covpass…

🇫🇷 TousAntiCovid Verif
🤖 play.google.com/store/apps/det…
iOS apps.apple.com/fr/app/tousant…

So ⚠️ THIS IS THE IMPORTANT PART ⚠️

Only if your certificate in 🇩🇪 Corona-Warn-App / 🇮🇪 COVID Tracker Ireland / 🇫🇷 TousAntiCovid

verifies with

🇩🇪 CovPass Check / 🇫🇷 TousAntiCovid Verif

is it valid

Now, you may say, why do apps allow the import of certificates without that check being in place from the start?

There are reasons for that:

https://twitter.com/Linuzifer/status/1410969901754470400

Also thanks @jwildeboer @i_x_s @timohetzel for help understanding this part!

So the principle is clear enough...

Import in one app, verify in another

But what about the actual *PRACTICE*?

I've just scanned my partner's EU Digital COVID Certificate... and it PASSES ✅ with 🇫🇷 TousAntiCovid Verif and FAILS ❌ with 🇩🇪 CovPass Check...

Which is pretty 🤪 and I don't know how that is possible

If you got a NHS 🏴󠁧󠁢󠁥󠁮󠁧󠁿🏴󠁧󠁢󠁷󠁬󠁳󠁿 issued QR code, imported into another app, to then verify with one of the verification apps *please tell me in a reply to this tweet*

Or likewise if it fails, reply as well

The crux of it: all of this might in the end work, somehow

But it is an absolute mess

The easiest would of course be if the 🇬🇧 Government just joined the EU Digital COVID Certificate scheme. Technically simple, politically impossible...

/ends

P.S. Seems 🇩🇪 CovPass Check is restricted to German app stores

But the 🇵🇹 Passe Covid (that has the same sort of function) is not restricted - thanks @GatoJuno!

🤖 play.google.com/store/apps/det…
iOS apps.apple.com/lu/app/passe-c…

P.P.S. Seems there are all sorts of part restrictions for the apps here (and in some weird combinations)

The crux of it: the 🇫🇷 TousAntiCovid Verif app is available for all AFAIK, so use that as your verify app if others fail!