What is the newest type of money?

The newest type of money is often considered to be Central Bank Digital Currencies (CBDCs), which are digital forms of a country's Fiat currency issued by central banks. Unlike cryptocurrencies, CBDCs aim to combine the benefits of digital transactions with the stability of traditional government-backed money. As of 2023, several countries are in various stages of research, development, or pilot testing of their own CBDCs to enhance payment systems and financial inclusion.