My fear is that they will not need to police anyone. They will just contain the flow of their tokens between entities that have a "registered" economic relationship. For example, you get paid for your job in CBDC by your official employer. You can spend your CBDC to buy stuff from registered vendors etc. They will most likely restrict all flow between friends/family members etc. If there is pushback, they might allow some form of donation/gift to people you have a close, "registered", relationship with. Any other money transfers will not be allowed, with the reasoning that they automatically have to be linked to illicit activities. - "How am I supposed to sell my old shoes to someone?", you might ask. - "You cant directly. Sell it to a business that buys (and recycles) old clothing" , they will reply....