Programmable moneyFor example, a token can be equipped with inherent logic on a blockchain and thus extends the properties of programmable payments. For example, this token can be programmed to gain or lose value over time (e.g. to implement interest payments). Alternatively, it could be ensured that this token can only be spent on certain things, e.g. food. (Publication date 10/05/2021)

(see https://philippsandner.medium.com/programmable-money-and-programmable-payments-8038ed8fa714)