I'm quite sure if Scot Gov committed to vaccine certificates they'd up the uptake, ie if you can prove your double vaccinated you can go clubbing, no long need to self isolate if only a contact and travel.
But they drag their heels. Why aren't they pushing vaccines for younger teens stop covid going round the secondary schools?
Which in turn helps to protect the primaries and nurseries. The wee people who can't be vaccinated.