This is already the case in Europe where many common transactions are simple and free bank to bank transfers. And here in Singapore I rarely use cash as most everything is paid via phone app. I've said before, the days of cash transactions are numbered. The vast majority of consumers have spoken, money will be dematerialized within 10 years.
As a crypto promoter I welcome this, it's good to hear of a system that doesn't need a lot of memory or resources to function. And I'm a little shocked to hear of XRP not on that list, since they were working very hard to bring their system mainstream and even working with regulators to make their system legal. I'm even more shocked to hear IOTA made it on that list, I believe they have a 3 point verification system? Anyway, it would be a good thing for the crypto space to have a digital dollar, this would attract more people to Bitcoin and alts. And i'm sure the FED is looking for ways to hide their own transactions, and I could imagine the reason why they wouldn't want to use a blockchain related currency since there is a lot of corruption going on. And since everyone can view everyone's transactions easily with blockchain. With a verification system like this I would imagine it would be a lot easier to hide their "personal" transactions. Absolutely nothing since everyone knows Bitcoin is used as a store of value and not as a payment method. Do you really think anyone wants to use Bitcoin as a currency? Could you imagine paying for gas and then having to type in the gas stations wallet address on your phone letter by letter, so you can pay with Bitcoin? I don't want that, and I'm sure nobody else does either.
That's the name of the game , centralised digital currency that the government controls as long as they get their share