What's the certificates like in Thailand? Are they valid for international travel? Are they recognized by immigration of other governments, or are they for use within Thailand only?

The certificates Canada is giving out are a complete joke so far. Well, there is no federal Covid certificate yet, but the health minister assures us that Trudeau is working "expeditiously" on it, so that means it'll probably be out summer of 2022 or something, who knows.

So instead each province went and made their own Covid vaccine passports, and it's just an unfathomable joke. It's literally just a piece of paper that you print off on your computer at home, it has your name, the word "vaccinated" and a QR code. Then apparently you just carry this piece of paper around with you, and that's all you need.

I've dug into the QR code, and it's a hoke. Literally all of your information is embedded directly into the QR code itself. Then there are a couple callback URLs within the QR code so whatever mobile app staff are using to scan these things can authenticate the information. However, one of the callback URLs goes to an "under construction" page and the other one throws a server not found error.

Also whoever developed that thing decided to try and be cute and clever by using non-standard encoding for.. who the hells knows why. Definitely not for security because the encoding library is open source and available for free on the internet. Takes all of about 5 minutes to bypass that.