Why should the POS machine sign in? Many friends who first contacted the POS machine will see the check-in option. So, in the face of familiar check-in operations, do you know what knowledge is included? Why do I need to sign in? Check-in and settlement is a concept? Xiaobian today will talk about why the POS machine should be signed. Friends then go down and watch.
1, check-in method: different POS machines, the account number and password are different, for example:
(1) ICBC POS machine: operator: 201; password: 000000;
(2) ABC and most three-party POS machines: operator: 01; password: 0000;
Sometimes by logging in the account number and password, the online check-in is not triggered (that is, the POS machine does not dial the host and jumps directly to the standby interface). This only implements the login of the account. When you make the first online transaction, the POS machine First check in by default, then online transactions.
For example, if the POS machine does not sign in, the direct card swipe will be particularly slow or the card will fail, because the POS machine first signs in by default, and then reads the bank card for consumer transactions.
2, the purpose of the sign-in: POS machine sign-in has two purposes:
(1) Connecting the host proves that the pos device is legal;
(2) download the latest work key;
Steps:
(1) Set a legal work key, bank card center phone number, merchant number, terminal number;
(2) Dial-up connection;
(3) returning to the sign-in success or failure;
3. Check-in and settlement is a concept
The former is to verify the legitimacy of the operator, you need to enter the operator number (the teller number) and the password, and some only need to enter the password. The check-in is completed on the POS machine and belongs to the offline operation.
The latter is to verify the legitimacy of the POS machine, and it needs to communicate with the background. When the POS machine signs in, there will be a prompt to receive the data. When the sign-in is received, a MAC (message check code) will be sent in the background, and the subsequent online operations will be performed. Send this MAC to ensure that the transaction is the POS machine that was previously signed, and the POS machine is online.
The settlement function is used to send and reconcile transactions.
If the consumption is offline, then the transaction data is kept in the POS machine, and the transaction will be uploaded to the server only when the settlement is made. If the settlement is not settled, the money will never arrive at the account;
If the purchase is online, the POS will also upload the transaction and check the transaction data. At this time, even if the settlement money is not made, it will arrive. After the settlement is completed, the POS opportunity to do a sign-off operation, and clear the previous transaction data (clear water), then some will be automatically checked according to the different procedures, and some need to manually check in.
Summary: There are a lot of friends who have contacted the big machine for the first time. They will ask why they have to sign in every time. For this problem, the card god still feels the need to organize the materials for friends to see. So that the friends who first contacted the POS machine have a general understanding. I hope this information will be helpful to friends who are new to POS machines.
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