Pos machine binding credit card is mainly used for authentication. Because many personal credit card swipers, such as hand brushes, are all personal credit card swipers, when users swipe their cards, the money will directly hit the user's bank card, so it will arrive in seconds, that is, after swiping the cards. At this time, the payment institution needs to advance the money to the user first, and it also needs authentication and submit the credit certificate to the payment institution. Binding a credit card is the most direct way to submit a certificate.

When merchants need to handle UnionPay pos machines, they need to prepare the documents needed by banks first. If the documents are incomplete, they need to be processed as soon as possible. Many companies and individual industrial and commercial households can't install UnionPay pos machines because they don't have bank license and organization code certificate. Handling pos machines also needs to wait for the audit of the bank credit department. After the approval, we will call to make an appointment to handle UnionPay pos machines at home. People with credit cards have already made credit and risk assessments for users when they check their cards in the bank, so the risk of funds has also been greatly reduced.