Do you know the ten basic knowledge of POS terminal?

5. What is the flow card ?

SAM card for GPRS communication in mobile POS terminal network has the difference between big card and small card, the difference between the strength of communication signal, the flow card with 11-bit number to recharge and the one-time use of pre-storage flow card, a POS terminal flow card.

6. What is Mcc ?

MCC is the abbreviation of Merchant Category Code. There are tens of millions of merchants in China. When the receipts are distributed POS to merchants, a number of merchants will be set. This number is very important. This number is usually 15 bits, which is composed of institutional code ( 3 bits ) + regional code ( 4 bits ) + merchant type MCC code ( 4 bits ) + merchant sequence number ( 4 bits ), and MCC code is an important part of this merchant number.

7. What is electronic signature ?

Electronic signature is a more secure and efficient new signature method, which can replace the traditional paper signature. Using electronic signature, only need to sign on the touch screen after the transaction is completed. POS will automatically upload the signature to the system after the signature is completed. After the upload is completed, you can choose whether to print paper tickets, printed tickets have printed cardholder electronic signature.

8. What is machine S / N ?

The product serial number of POS manufacturers for each terminal is generally called SN number, which is generally printed on the back of the POS terminal. The purchaser needs to enter SN number in the system to connect the POS terminal with the system background.

 9. What is wind control ? generally refers to risk control. Generally, financial institutions and payment companies have such positions. They mainly take various measures and methods to eliminate and reduce various possibilities of risk events or reduce losses caused by risk events. The basic ways are : risk avoidance, loss control, risk transfer and risk retention.