币界网报道：Crypto debit and credit cards enable users to spend their cryptocurrency holdings or earn rewards in crypto for their purchases. These cards require actual funds, do not offer "credit", and have volatility issues due to the nature of cryptocurrencies. Rewards are typically in the form of a cryptocurrency issued by the card provider. High-tier cards require staking large sums of native tokens, which can be risky. Regulatory challenges and geographical availability also limit their appeal. For now, crypto cards may only appeal to those who have decided to "unbank" themselves.