A few quick thoughts:
- the government is dividing people into classes of "threat" and "non-threat", although with the evidence that vaccinated people can still transmit the virus, there is something of a porous boundary between the two
- people in the threat class will be denied access to certain services & amenities
- as with spending money on plexiglass barriers, hand sanitizers, and other measures, this will present a compliance cost for businesses in some form or another
- this is a cultural softening of attitudes on restricting access & participation; in the context of the virus, this may even make sense, but in so far as the technologies & processes to facilitate such control & restriction are developed and implemented here, it will make them easier to implement for other use-cases in the future.
The future use case and designations of what the government (or whomever) may consider to be a threat or not and how to divide society accordingly is the unknowable here. Swallowing this pill now will ease societal adoption towards future implementation, which, piggy-backing off the infrastructure employed here, will make such arguments & uses possibly more justifiable in the future. Alternatively, this experiment may end in such failure that it will be abandoned, but... my feeling is that this is a tool that governments *want* to have available, and that the idea will not die easily.