I flew to Spain (from elsewhere in the EU) in September, my wife was not vaccinated so had to do all the extra paperwork and antigen tests both ways. We registe

I flew to Spain (from elsewhere in the EU) in September, my wife was not vaccinated so had to do all the extra paperwork and antigen tests both ways. We registered online with the Spanish health ministry before flying and were provided with a QR code, you have to say whether you are vaccinated, and if not are told you need to show a private negative test result on arrival. On the way we were asked if we had a negative test at the airport, we showed it but they didn't look at it. On arrival they just asked to see the QR codes, not the test result. The actual private antigen test results could very easily be altered with Preview.app. Most that we've done so far have a QR code that goes to a hosted version of the certificate, but nobody has ever scanned it. I wonder what would happen if you change it to a URL that returns a 404 - or even just remove it, one I took recently didn't even have that. Security theatre for sure. Whenever I've travelled, I've been more worried that I might not have the right paperwork than catching COVID.