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Payment Systems
The BRSA has introduced a regulation to reduce paper use in POS devices. Cardholders who do not want a paper receipt for card purchases will be able to receive and store it digitally, with the rules taking effect in September and December 2023.
From My Readers
A reader asked why ATMs can't warn customers that a not-on-us withdrawal is using their overdraft. The short answer: BKM currently works only with the available limit, and banks include the overdraft in it.
HCE
We can list the differences between the NFC Secure Element and HCE payment methods as follows: Secure Element requires a mobile operator and stores card data on a hardware chip, while HCE needs no operator and relies on cloud-based tokenization.
Contactless
It is important to use contactless cards to prepare our payment habits for the future. In Turkey, one in every 3 cards and one in every 4 POS terminals is contactless-enabled, yet usage remains around 5%.
Credit Card
PVV is the number encoded on a card's magnetic stripe that allows the cardholder's PIN to be verified by ATMs and POS terminals. It is a 4-digit cryptogram calculated through a cryptographic operation using the PIN and card data. The real result is longer than 4 digits.
Credit Card
The minimum payment amount is the portion of the monthly debt - resulting from a cardholder's credit card spending shown on the latest statement - that must be paid. How much of the total debt is the minimum payment amount? Although the calculation varies from bank to bank...
Debit Card
Debit cards and prepaid cards are generally closed to Mail Order transactions. The same usually applies to Non-3D (non-3D Secure) online transactions, which banks keep disabled by default to limit fraud risk.
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.
Security
With Chip&Pin technology, card PINs and chip-based transactions became widespread. As online shopping grew, strengthening the security of these transactions became a necessity, and OTP began providing that transaction security.
ISO 8583
F25 - POINT OF SERVICE (POS) CONDITION CODE is the field that defines the condition under which a POS transaction was performed. Possible values include 00 Normal presentment, 01 Customer not present, 02 Unattended terminal, and more.
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.
Payment Systems
As part of the first-phase work of the Digital Turkish Lira Project led by the Central Bank of the Republic of Turkey (CBRT), the first payments on the Digital Turkish Lira Network were successfully carried out. The CBRT will continue its closed-loop pilot tests in the first quarter of 2023.