There are often card friends who set a password for credit card transactions, but they don't need a password when swiping the card. This may be related to the amount of credit card swiping. For example, some people have heard that credit cards don't need a password for less than 1,, so is this true? Let's analyze it. don't you need a password for credit cards under 1 yuan? In fact, credit cards under 1 can be paid without password, but three conditions must be met. One is that credit cards must be flash payment cards, usually some contactless IC cards; One is to open the function of small-amount confidential face-to-face signing, which is enabled by default in most bank flash payment cards; There is also a credit card POS machine that must be a flash payment POS machine. After these conditions are met, you can take a photo on the POS machine directly with a credit card. Even if a password is set for a transaction below 1 yuan, you can complete the payment directly without losing. Does it look amazing? However, there is a bad place behind this fast payment, which is that it is easy to be stolen. There is often news that many people forget to pull out the credit card on ETC equipment, and as a result, some people steal the credit card through the window with a flash POS machine, and some people show the QR code bound to the credit card during the transaction, and they are also stolen from a distance, using the function of small-scale confidential face-to-face signing of the credit card. Therefore, if you think that it is not safe to use a password for a credit card of less than 1,, you can turn off the small amount of secret-free face-to-face signing function of the flash payment credit card and directly call the credit card customer service to transfer it to the manual customer service. After it is closed, any amount of credit card transactions can only be completed by paying the password.