It doesn't even take a brain to follow this trail.
Today some of the credit card companies track your purchases and send those to the Government.
Certain medicines, firearms, air travel to DC - etc.
(Cash it's a little harder.)
Next -
The people administrating the Digital Currency can eliminate the credit card step.
Track it themselves and decline purchases that they don't agree with.
Want to buy firearms - currency declined.
Want to but a gas guzzler vehicle - currency declined.
This is actually the easy part; it gets harder from here.
The President's son, Don Junior, recently had his bank account closed because he was operating a media business that wasn't Democrat Media Bubble Cult approved.