Yeah.....sure. So *they* say. What could possibly go wrong?
Unreal the personal info suckers, er, folks are willing to submit to giving away.
That's correct. The data in the QR-encoded credential has your name, date of birth and vaccine status. The stormtrooper who scans the credential will also force you to show your ID. Otherwise I could simply display your credential and say that I am you. Then he matches the name and DOB to the drivers license and lets you on your way.
Now it is obviously possible for their scanner to be networked and send your name to the big database to see what they can detain you on. However a scanner does not need to be networked. It only has to verify the digital signature on the credential, and display the name, DOB and vaccine. There's no need for a network connection whatsoever to do that. But like I said, they can if they want to. And they will want to.