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Laws & Regulations
The CBRT announced that it has launched open banking services in payments, a component of the digital economy roadmap of its liraization strategy, through BKM's Open Banking Gateway (GEÇİT).
Credit Card
Track3 is a field that doesn't need to be written to the card's magnetic stripe. It's used only in very specific cases and isn't required for authorization transactions. Issuers generally don't encode Track3 data onto the card's magnetic stripe. It consists of 104 numeric characters.
Credit Card
BIN stands for Bank Identification Number, the unique code made up of a card's first 6 digits that identifies which bank issued it, under the ISO/IEC 7812 standard.
ISO 8583
Currency information for card transactions is sent in fields F49, F50 and F51. The ISO currency values that can be sent in field F49, which carries the original currency value, are listed below.
ISO 8583
F55 - INTEGRATED CIRCUIT CARD (ICC) SYSTEM RELATED DATA: the field where EMV data is written on chip cards. It consists of components such as Position, Private Data Subelements, PDS Tag, PDS Length, and PDS Value...
Online & Authorization
TLV is a data storage method used to speed up the parsing of data. For example, reading data from a card's chip at a POS and carrying it through authorization uses the TLV structure.
Payment Systems
Takasbank (Istanbul Settlement and Custody Bank) exists to increase the competitiveness of Turkey's markets by providing clearing and custody services, financial services, and other economic activities under the relevant legislation.
Credit Card
Issuer Identification Number (IIN) is the first 6 digits of 16-digit cards and the first 8 digits of 19-digit cards. It is more commonly known as BIN (Bank Identification Number). Learn what the IIN table holds and how to look one up.
Credit Card
BIN is short for Bank Identification Number: a unique, bank-specific number created under ISO/IEC 7812 standards that shows which bank a card belongs to. It is the first 6 digits of a card.
Fraud
Fraud monitoring refers to tracking card transactions through scenarios to detect potential fraud and taking rapid action immediately before or after a transaction occurs - such as identifying a suspicious transaction, calling the customer, or temporarily blocking the card to prevent authorization.
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.
Credit Card
If you can't use your card for e-commerce transactions abroad, first check that e-commerce authorization is enabled, that 3D Secure has been set up, and that your bank's authorization system is active. The issue may also originate from the merchant's bank.