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Agentic Commerce
Are We Ready to Give an AI Agent the Authority to Make Payments? Having long looked at complaint and dispute processes in payment systems, I think granting an agent payment authority is far different from research or product selection.
Online & Authorization
In EMV, data is stored in Tag-Length-Value (TLV) format, and it is carried between the card, the POS terminal, and the authorization system in this same format. This post lists every EMV Tag, its type, and its description.
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.
Agentic Commerce
Can AI Decide on Our Behalf? Letting an AI agent handle research can make life much easier. The real question is where that should stop, and how much decision-making authority we are ready to hand over.
Merchant & POS
Current information: this article describes the limit in force at the time of publication. To reduce the risk of the coronavirus (Covid-19) spreading, the contactless transaction limit on credit and debit cards was raised to 250 lira.
FAST
The Central Bank of the Republic of Turkey (CBRT) has implemented a significant limit increase in the FAST system. Under the regulation effective August 26, 2026, the FAST money transfer limit was raised from TRY 100,000 to TRY 300,000. The same increase also applies to Request to Pay...
ATM
A shared ATM lets a customer of one bank use another bank's ATM for card or credit card transactions. Within customer limits, shared ATMs allow deposits, withdrawals, balance inquiries, and credit card debt inquiry/payment.
Closed-Loop Payments
Is Alipay a payment system, or a digital economy? In the previous post we discussed how Starbucks shows that payment systems can evolve into a different structure. At first the goal was to make payment easier for the customer. As the system grew, loyalty programs...
Credit Card
From the outside, Visa contactless looks simple, but once the limit is exceeded and PIN comes into play it gets deeper. Why do response codes 65 and 70 behave so differently on POS devices in different countries, such as the Netherlands and Saudi Arabia?
Laws & Regulations
Payment and electronic money institutions must set up internal control and risk management units, each with at least one dedicated employee. The same person cannot carry out both functions.
Payment Institutions & E-Money
On 7 October 2023, the CBRT amended the Communiqué on Information Systems of Payment and E-Money Institutions and Data Sharing Services of Payment Service Providers, first published on 1 December 2021. Links to the new text, a comparison table and a detailed summary of changes follow.
Credit Card
The customer's name and surname printed on credit and debit cards is called the emboss name. But can the name be printed on a card without any limit? There is a defined field for all information printed on a card, and these fields have specific standards.