You don't have to do anything that seems illegal to participate in the illegal cashless society. A person selling ice cream out of a cooler at the beach is an e

You don't have to do anything that seems illegal to participate in the illegal cashless society. A person selling ice cream out of a cooler at the beach is an example of a business that probably would not exist if they couldn't take under the table cash payments, considering the business model is a simple arbitrage opportunity on wholesale ice cream that probably wouldn't pencil out with the overhead of credit card fees or taxation.