Payment Systems
Agentic Commerce Series - Part 2
If users start describing their needs instead of searching for products, one of the internet economy's most fundamental habits could change.
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"Card Data"
231 articles found
Merchant & POS
What Happens Behind the Scenes When a QR Code Is Scanned? | Closed-Loop Payments #2
In the first post I explained what closed-loop payment systems are and how they differ from open-loop ones. Many of the replies I received boiled down to one question: how do these systems actually work behind the scenes once a QR code is scanned?
Payment Systems
Preventing Financial Losses in Payment Systems: Authorization, Clearing, and the Reversal Mechanism
Every payment transaction completes in seconds, yet dozens of controls run behind the scenes. This post covers the precautions for authorization and clearing, the critical role of reversals, and the financial loss scenarios most often seen in the field.
Payment Systems
What Is an Appeal? What Does It Mean in Payment Systems?
In payment systems, an “appeal” is the process of objecting to the outcome of a transaction dispute. It is usually discussed alongside chargebacks, but it plays a critical role in interbank dispute resolution, when a party asks the card scheme to re-evaluate a concluded decision.
Merchant & POS
What is Application Usage Control (AUC)?
AUC (Application Usage Control) specifies restrictions that limit an application by geography or by specific transaction types. It is a 2-byte data element in Tag 9F07. If present, the terminal performs checks such as whether the transaction is at an ATM.
General
Agentic Commerce Series – Part 6
Who will win in Agentic Commerce? Owning the customer used to be a huge advantage. Once an agent starts deciding on the customer's behalf, where does the real power move to?
Merchant & POS
What Are the Partial Authorization Requirements for an Acquirer Bank?
Partial authorization lets an issuer approve part of the requested amount when the card lacks the full balance, with the rest paid another way. This post covers the technical, receipt, clearing, reconciliation, merchant and certification requirements for acquirers.
Payment Systems
Where Can I Find OHVPS Participants and Participants That Have Completed OHVPS Certification?
Open banking means sharing financial data with third parties securely, and Payment Services Data Sharing Services (OHVPS) are the two core payment services under it. This post explains both and where to find the participant list on the BKM website.
EMV
What is a Bank Identifier Code (BIC)?
BIC stands for Bank Identifier Code. It is the universal bank identification code used for automated processing in banking and related financial environments, identifying banks as specified by the ISO 9362 standard.
Payment Systems
Visa Overseas Contactless Transactions – After Code 70 (Part 2)
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.
HSM & Security
What is ZPK (Zone PIN Key)?
ZPK, also known as the PIN Protection Key, is a data encryption key that is distributed automatically and used to encrypt PINs. It is also referred to as the 'Working Key'. This key allows PIN information to be carried securely across the network.
Laws & Regulations
What Is Law No. 7192 and What Does It Include?
Law No. 7192 amends certain articles of Law No. 6493 on Payment and Securities Settlement Systems, Payment Services and Electronic Money Institutions. Announced on 22 November 2019, it entered into force on 01.01.2020.