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Merchant & POS
Partial Authorization lets an issuer approve part of a transaction instead of declining it when the balance or limit is insufficient. This post covers how it works in ISO 8583, whether it is mandatory, and why it matters for the business.
Merchant & POS
In EMV-based debit card transactions, PIN verification is decisive for both security and liability. What happens when a card that only supports online PIN is sent to the issuer without a PIN, and the issuer approves it? Who owns the risk?
Chargeback
The chargeback dispute period varies by reason, but it can never exceed 540 days from the date a transaction posted to the card. Within that limit, cardholders generally have up to 120 days to dispute, depending on the type of issue.
Security
Forgery in card payments means transactions made with card details without the cardholder's knowledge, or purchases with counterfeit or stolen cards. Merchants cannot eliminate fraud and chargeback risk, but they should aim to reduce it to reasonable levels.
Online & Authorization
A reference guide to authorization response codes seen on POS and ATM transactions, with plain-language explanations of what each code means and what to do about it.
Merchant & POS
For a transaction to go through clearing, the card-issuing bank and the merchant bank must be different. If they are the same, the transaction is not subject to clearing and is processed directly by the bank.
Merchant & POS
PIN Transaction Security (PTS) verifies that card data and PIN information are used for a payment transaction. It is a set of modular evaluation requirements managed by the PCI Security Standards Council for PIN-accepting terminals.
Credit Card
You start a transaction at an ATM and your card is returned, even though you think nothing is wrong. Here are the response codes usually used in these cases.
Payment Systems
In card payment transactions made via a physical POS device, entering the card's PIN keeps the transaction secure, while in virtual POS transactions, security is provided through the 3D Secure flow. Are 3D Secure payment methods standardized? There are 3 different 3D Secure models.
Merchant & POS
In payment systems, exchange rate information is used in two places: POS devices that support foreign currency transactions, and credit card transactions made in a foreign currency (usually abroad).
Merchant & POS
No slip printed after a POS transaction? Here's how to check whether the transaction actually went through and what steps to take if the receipt never came out.
Closed-Loop Payments
Is Starbucks really selling coffee, or building an ecosystem? Prepaid balances, a loyalty program and customer data turn a coffee chain's payments into a closed-loop economy, a very different model from Istanbulkart.