[supermatt]

They dont expire after 1 hour - where did you hear that?

[justinmchase]

The example in the article seems to show a 1hr expiration but its probably just fake data for the sake of the article.

[Spooky23]

I think there is a green pass for unvaccinated individuals that allows an antigen test to be used. Those tests are only valid for a few hours, varying by jurisdiction. (I think most US states accept these for 6 hours)