POS Terminal Trading Process

The operation flow of POS terminal should meet the following basic requirements:

A) prompt trading function selection:

function keys and number keys are available at the same time.

b) For transactions that need to verify the operator or administrator password, prompt for input and verification.

c) According to the transaction requirements, prompt card or hand card number:

If you do not swipe, you can press the specified function keys, enter the manual input card number prompt.

D) According to the transaction requirements, select the prompt to enter the relevant data:

Includes: Transaction amount, pre-authorization amount, return amount, original authorization code, original POS serial number, original search reference number, etc.

e) According to the transaction requirements, the cardholder is prompted to enter the password:

If you press the Confirm key directly, it is treated as no password.

f) Prompt processing

Display processing and communication status, such as dialing, sending, receiving, automatic punch up, batch on-off, etc.

g) display the transaction results and print the purchase order according to the transaction and response code.

The processing flow of the POS terminal to various trades is as follows:

1. Read Card processing

For POS terminals that support IC card transactions, if the cardholder is using a magnetic stripe card with a chip, the operator should first attempt to trade using an IC card.

For a POS terminal that supports EMV transactions, when the magnetic stripe of the card is first read, and the service code in the track information is started with ' 2 ' or ' 6 ' (indicating that there is an IC on the card), such as the IC Card confirmation parameter is set to " 1 tip, the terminal should display the diagram first - ask the operator to confirm whether the IC If the operator confirms that the card is IC card, the diagram should be displayed - required to use IC If the operator confirms that the card is not IC card, continue to follow the magnetic stripe card trading process.

　　　　

The IC card reading process in the card processing process includes the IC card power-up and the application selection, please refer to the relevant parts of China Financial integrated Circuit (IC) card specification for specific requirements.

For dual currency cards with UnionPay aid application and international card credit card company application, the POS terminal should prefer UnionPay aid application.

1.1 EMV process

For specific requirements of the EMV process, please refer to the China Financial Integrated Circuit (IC) debit/credit card specification.

If the card issuer script is included in the online transaction, the POS terminal should send the script processing results on the next online transaction or on-line or before the batch settlement.

If an IC card rejects a transaction that has been approved online, the POS terminal should produce a punch.

The POS terminal should display the "Do not unplug the card" to the operator or the cardholder during the transaction and prompt "Please unplug the card" at the end of the transaction.

1.2 EMV streamlined process

Debit / Credit Application IC card consumption revocation transactions, return transactions, pre-authorized revocation transactions, pre-authorization to complete the revocation of transactions using the simplified EMV process, the POS terminal through the IC card reading card number, card serial number, The expiry date and other transaction-related data, see the following:

In addition to the balance of inquiry, detailed inquiry, consumption, consumption cancellation and other teenage processes, the other has not been used, according to the work, the following will be detailed introduction.

POS Terminal Trading Process