1, card damage: such as credit card wear or degaussing. If you can't read the credit card information on the POS machine, you can't swipe your card, but the status of the card is normal and there is a limit, so online payment is no problem. The solution is simple. Call the customer service of the issuing bank to apply for "replacing the damaged credit card" and reissue a new card to swipe the card.
2. Brush to merchants in Tian Shu: All major banks have their own merchants in Tian Shu. As long as the merchants are on the list, they are likely to be restricted from trading. The merchant quota of Guangfa Credit Card, which has been heated up before, is that the merchants blacklisted in Tianshu cannot swipe their cards.
If you are not sure whether it is a credit card problem or a business problem, you can try a flash payment transaction and bind a card to your smartphone. If you can't swipe your card, it must be a merchant problem.
3. POS machine failure: First, check the network problem of POS machine. Nowadays, many POS machines are networked with flow cards. You can replace the flow card, or test it with a mobile phone card to see if there is any flow on the flow card. Secondly, let's see if there are any restrictions. You can brush a little more and see if you can brush it.
In other words, what is the reason why credit cards can be used online instead of swiping cards? I hope I can give some reference to my friends.