credit cards can be swiped without a password. Users can make transactions by signing. After swiping the card, the user signs the receipt, and the merchant checks the signed notes to complete the transaction. Or the user has opened the function of small secret-free payment, so when the consumption amount is below 1 yuan, you don't need to enter a password when swiping the card, and you can complete the payment directly by flash payment.

However, the security of payment without password is relatively low, so it is better for users to set it as password transaction and cancel the function of small secret-free payment.