Crypto credit cards function like a regular credit card except that cash back is in crypto. In the same manner, crypto debit cards are funded in crypto. These card services may accept crypto tokens directly or provide fiat-to-crypto conversion. Other crypto services may be offered, and card requirements differ. Integrating CeFi and DeFi is a nascent industry, and new offerings are advertised routinely. See
DeFi and
Nexo Card.