Everyone is using the internet for buying and selling: a seemingly limitless marketplace.
Contraband are goods which are illegal to possess or trade. For example, you would not show up
What if someday the only people using cash are those involved in criminal activity. Potentially, the only reason to have cash would be to buy something illegal. If you want to figure out who’s running a large criminal enterprise, there is on old saying that you merely need to “follow the money”; at trial, money is admitted into evidence by prosecutors as circumstantial evidence that a defendant committed a crime. In the not-too-distant future, everyone buying and selling illegal items will not be able to complete a hard-currency transaction. At some point, the buyer will not have cash because he will be accustomed to using his credit card—demanding cash will be unreasonable. The illicit seller will now need to open a bank account and conform with his customers’ expectations. Even now, banks require proof of identity and address to prevent money laundering. A legitimate bank keeps track of these accounts and the volume of transactions which will enable law enforcement to easily “follow the money.”
Cash may very well become contraband. Panhandling will be a lost art.