It is the latest status symbol. Flash it at the people, and you can get access to concerts, sports arenas or long-forbidden restaurant tables. Some day, it may even help you cross a border without having to quarantine.
The new platinum card of the COVID age is the vaccine certificate. It is a document that has existed for more than two centuries, but it has rarely promised to hold so much power over culture and commerce. Many versions of these certificates now come with a digital twist.