At least according to the UD.

 
Not exactly sure how that works, but the transition to a cashless society is undeniably underway, and obviously that is going to have a lot of ramifications for us vis a vis being secure and incognito, money-wise.

 
Crypto-currencies are one option, though not one a relish given the situation they are in these days.

 
Gifts cards are another.

 
There are gals who nevertheless are already accepting money transfers from outfits like Zelle, etc.  This will work for some of us, but hardly a way to avoid a paper (or more accurately electronic) trail.

 
Barter is another means of making payments, but certainly pretty awkward.

The Federal Reserve Board is currently researching the feasibility of a U.S. Central Bank Digital Currency but has no intention of a quick adaptation.  The Fed recently asked for public opinion on this topic and results will be taken into consideration.  The Fed currently has two forms of  central bank money as a liability, 1) physical currency ($2.2 Trillion) and 2) digital account balances ($4.2 trillion).  The later is used frequently in payment processing systems to enable commercial banks maintain reserves while making payments via ACH in a timely and stable manner.

But the ACH (Automated Clearing House) does not apply to overseas payment systems nor does it cover all non-cash transaction in our nation.  The Fed is building a new interbank settlement service called FedNow to allow instant payments between commercial banks to help speed transactions.  But there are other problems slowing processing involving non-bank transactions that a Fed back CBDC could help solve.

This topic is quit involved, but in short, even if a US CBDC is adopted, it will be in addition to the other two forms of our central bank's money leaving cash as king for many years to come.  Further reading in can be found online here and a pdf of great deal can be downloaded.

A Central Bank Digital Currency would be Fiat Money by definition.   Dollars, in a third manifestation.  

Not a cryptocurrency at all, even if cryptography would be involved under the woodwork.  
There would not be a need for "mining", nor any form of "concensus" since it would all be under the control of the issuer, i.e. The Treasury of the United States.  There are already digital (not "Crypto-") currencies that are centrally issued and controlled -- look up "permissioned" for the story.  

So imagining that the evils (and benefits) of CBDC would be those of cryptocurrencies is wildly wrong.

We can only hope that those evils are not far worse, but that's out of our (The People's) control now.