2. The reasons why credit cards don't need passwords are as follows: Anyone who knows about credit cards knows that American credit cards can usually complete credit card payment by signing. After the introduction of credit cards in China, credit cards will also be brought to China in the form of signature consumption. Many people regard avoiding password trading and signing with a stroke of a pen as "chic".
3. Credit cards can be swiped without password. If the word "flash payment" appears on your bank card, from June 1 day, the limit of small-sum confidential single payment of UnionPay card will be raised from 300 yuan to 1000 yuan. Little secret-visa-free This is a "pay-as-you-go" payment experience.
4. However, the words "Flash Pay" and "Express Pass" may be printed on your bank card, both of which are turned on by default. This is a service that is convenient for consumers to pay quickly. When you check out, you can complete the transaction by swiping the bank card on the POS machine without entering the password and signature.
5. If it is a non-flash payment POS machine, you can only use the traditional way to insert the card and swipe the card, so you must use the password transaction. Transaction amount: In order to prevent transaction risks, only a single small transaction below 1 000 yuan can be paid without password. If it exceeds 1000 yuan, even if you can pay by flash, you must enter a password to swipe your card.