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Payment Systems
How do banks fund so many points, bonuses, and discounts? This post explains the credit card profitability model: merchant commissions, interchange, interest income, installments, and why campaigns are an investment in transaction volume rather than a cost.
Merchant & POS
Terminal Verification Results (TVR): a sequence of bits produced when a terminal reads an EMV card, based on logical checks such as an expired card. This data object is used to decide whether a payment transaction should be accepted online, declined, or allowed to proceed.
Payment Systems
After switching to response code 70 for contactless limit-exceeded cases, we found that some overseas POS devices and acquirers did not handle it as expected. This post covers why the problem lies in the ecosystem and how to address it.
ATM
Cash overage and cash shortage are terms used in any system that operates with a cash account. A cash overage means more money is physically present than the ledger indicates; a cash shortage means less. In payment systems, these terms are most often used for ATMs.
ATM
The shutter can be described as the gate mechanism that prevents financial loss during ATM cash deposit and withdrawal transactions by controlling customer access to cash and preventing tampering with the ATM system.
Chargeback
Chargeback is inherent to card transactions, so it may be impossible to prevent entirely, but taking precautions keeps the risk to a minimum. Here are the key points merchants should pay attention to in order to reduce chargebacks.
Credit Card
A real attempted card fraud story: a fake Facebook friend request, a promise of free bank points, and a request for card number, expiry date and CVV2. Here is what happened and how to protect yourself.
Merchant & POS
When a transaction is made through a POS, it is recorded both on the POS itself and in the acquiring bank's authorization system. At batch close, the POS sends all its transactions to the bank, which reconciles them against its own records.
Online & Authorization
The Application Version Number is the version number of the application on the card. For example, the Visa VSDC application version number is 131, and the Mastercard M/Chip Lite version number is 2.