Hello, landlord, I'm glad to solve the related POS problem for you. First of all, to make it clear, in the early years, domestic banks could not transfer money to each other, so they could only go to the counter in cash. Later, the state established China UnionPay to realize the intercommunication between banks. China UnionPay can be said to be a regulatory agency established above major banks. China unionpay POS machine is actually a POS acquiring institution invested and established by China unionpay, which is called unionpay business. Is an independent settlement, specializing in POS business. It is the same as other third-party payments such as Lacarra Zhonghui, so it has no authority to handle credit cards at all. Credit cards are issued by banks, so it is absolutely impossible to issue credit cards through POS machines. I have worked in the POS machine industry for so long that I have never heard of any institution that can issue credit cards. If someone uses this stunt to issue a credit card, the landlord must pay attention not to fall into the trap of criminals.