It is illegal to swipe a credit card with a pos machine. The Supreme People's Court and the Supreme People's Procuratorate's Interpretation on Several Issues Concerning the Specific Application of Laws in Handling Criminal Cases of Impairment of Credit Card Management stipulates that those who, in violation of state regulations, use point-of-sale terminal equipment (POS machines) to directly pay cash to credit card holders by means of fictitious transactions, false pricing, cash return, etc. If the circumstances are serious, they shall be convicted and punished for the crime of illegal business operation in accordance with the provisions of Article 225 of the Criminal Law. POS(Pointofsales), which means "point of sale" in Chinese, is called point of sale information management system. It is a terminal reader equipped with bar code or OCR code technology, which has the cash register function of cash or barter bank. Its main task is to provide data services and management functions for commodity and media transactions, and to carry out non-cash settlement. POS is a multifunctional terminal. It can be installed in credit card merchants and acceptance outlets to connect with computers to realize automatic electronic fund transfer. It is difficult to obtain basic business information in bulk transactions. The introduction of POS system is mainly to solve the blind spot of retail information management, and it is also an important part of chain branch management information system.