This passport idea still seems kind of silly and impractical based upon the fact that vaccinated people can still have the virus and pass it on to others at a assuming lower rate, its just that they themselves wont have any symptoms or may have a lower intensity of symptoms.
Keeping in mind that vaccines to this virus are not 100% effective in blocking the virus completely.
I think the government health officials are aware of that and just promoting the idea of having their entire populations vaccinated.