- I doubt there'll be a national ID number. Surely we'll have the sense to realize that we already have world identifiers (at least everyone with an e-mail account does).
- No one would verify the information--by then the information would be accurate enough that verification wouldn't be cost-effective in this scenario. (I realize the verification is a means to emphasize how much info the pizza parlor has access to.)
- There's no economic rationale for the parlor to link to some of the records shown; the customer is only going to get aggravated by it and a business wants to please its customer. Cui bono? That's always a good question, particularly when there's a cost to doing something. 10 years from now the cost of transfering data will be negligible, but there's still a major cost in establishing means to move data between bureaucracies (like an insurance company and a pizza parlor).
But that's another day.
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