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immigration crime
I'm more interested in if vaccination passports are rolled out to things like pubs.
Sooner or later I expect something which can be verified (eg a QR code with a signed ID which can be checked against a database). From a privacy perspective that doesn't really matter when you are crossing a border since they already have your passport and the government knows you are travelling but might be less well received for a trip to Wetherspoons.
What stops me making an app that looks the same and claims I've had a jab or two?