A few observations about digital vaccination certificates:
* It's really just a static QR code, you can import it into your app, but you can also make a picture of it and save it into your phones gallery. Or carry the original paper copy around.
* This unfortunately means it's easy to "steal" other peoples certificates by just scanning their code when they have it open in their app.
* The certificate will not be for your name but will that *always* be verified?
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