It is not illegal for individuals to buy and sell consulting pos machines, and the scope of authorization or self-operated license is legal.
It is illegal to cash out maliciously by using pos machines. According to the Interpretation on Several Issues Concerning the Specific Application of Laws in Handling Criminal Cases of Impairment of Credit Card Management: Article 12 Whoever, in violation of state regulations, directly pays cash to credit card holders by means of fictitious transactions, false pricing, cash return, etc., shall be convicted and punished for the crime of illegal business operation in accordance with the provisions of Article 225 of the Criminal Law. If the amount of the act mentioned in the preceding paragraph is more than100000 yuan, or the funds of financial institutions are overdue by more than 200000 yuan, or the economic losses of financial institutions are more than100000 yuan, it shall be deemed as "serious circumstances" as stipulated in Article 225 of the Criminal Law; If the amount is more than 5 million yuan, or fails to return the funds of financial institutions1000000 yuan within the time limit, or causes economic losses of financial institutions of more than 500,000 yuan, it shall be deemed as "the circumstances are particularly serious" as stipulated in Article 225 of the Criminal Law. If the cardholder maliciously overdraws in the above way for the purpose of illegal possession and should be investigated for criminal responsibility, he shall be convicted and punished for credit card fraud in accordance with the provisions of Article 196 of the Criminal Law.