The service scope of UnionPay is to manage and operate the UnionPay logo, provide advanced electronic payment technology and professional services related to interbank information exchange of bank cards, formulate norms and technical standards for interbank transactions of bank cards, and mediate and arbitrate disputes in interbank transactions.

Unionpay is not an organization that handles POS machines. In the process of buying and selling POS machines, it undertakes the settlement function and collects fees from banks and payment companies in the process of buying and selling. UnionPay itself does not provide POS machines for business.

Therefore, anyone who claims to be a UnionPay staff to handle pos machines is likely to be a liar and needs to be vigilant.