All the (well-justified) fuss over the issue of vaccination of teenagers should not be allowed to distract us from the other undeclared battle in the war on our freedoms - government control of our activities and finances through a digital passport allied to a government crypto-currency account maintained at a central bank.
The vaccination pass is just the first step along that route. It would enable each citizen to be given a digital identity which could then be linked to our financial identity at the central bank, and used to permit or deny our purchase of tickets - travel tickets, theatre tickets, event tickets, whatever tickets.
Once shops and supermarkets are equipped with entry turnstiles (already pioneered on the London Underground) we could be denied all shopping rights. In fact, you wouldn't even need the turnstiles once cash has been outlawed, you could just be denied purchase rights at the till (although the shop might prefer to deny you entry in the first place).
The possibilities are then endless:
"A One World Currency would checkmate Brexit and mean the end of all sovereign states for good"
Far-fetched? Not a bit of it. Imagine what Mao, Stalin or Hitler would have done with such a control mechanism. Even they never managed to outlaw the use of cash, yet that is now an imminent possibility.
Just to underline the point, Computing For Ever spells it out for us: