[ZeKK14]

We can have testing stations everywhere, available to everybody, providing some kind of certificate. You would have to show this certificate when entering stadiums or restaurants to prove you're not infected.

Still not perfect, but this could be a workaround.

[duncan-donuts]

I have a lot of problems with this conceptually, but I think we should do something like this eventually. My biggest problem is my wife is sick, I’m not, I have a certificate that says I’m totally fine but I could now be infected, might be contaminating things, etc. What good is a certificate? We’d need to be tested almost constantly for it to mean anything.

[ZeKK14]

The goal would not to be 100% sure, only to reduce the spread to fall below R0 < 1 while keeping the economy running and people sane.

And yes, you would have to be re-tested regularly.