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Laws & Regulations
The Regulation on the Generation and Use of TR QR Code in Payment Systems sets the standards for QR codes in payment services. The Central Bank has taken the first step by drafting rules for a common QR code structure.
Credit Card
Banks generally keep a record in the system of a card's "First Transaction Date." This information is automatically populated by the online authorization system. So under what circumstances is it updated? First, an authorization transaction must…
ISO 8583
F43 - CARD ACCEPTOR NAME AND LOCATION: the field that holds the name and location of the merchant/ATM where a card transaction took place. It is 40 characters long and alphanumeric.
Merchant & POS
An offline transaction is one in which the card and POS terminal approve the transaction based on their own parameters, without contacting their banks. Whether contact or contactless, the device decides whether the transaction is processed offline.
Merchant & POS
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.
E-commerce
Alternative payment systems are services from intermediary companies that use virtual POS accounts in the background to benefit merchants. Law No. 6493 calls them payment institutions. This article compares them with bank virtual POS accounts.
HCE
When we talk about HCE methodology, many interacting architectural components come to mind. The core terms describing this architecture are listed below, starting with GCM/FCM (Google/Firebase Cloud Messaging), a service for sending push notifications.
Clearing
The Domestic Clearing and Settlement System (YTH) settles and clears transactions between two banks when a card from one bank is used at another bank's POS or ATM. Participants submit records that are cleared daily and multilaterally netted and reconciled.
Closed-Loop Payments
Why does a coffee chain build its own loyalty program, and why does a payment app keep adding services? This post looks at how loyalty, data, and new services drive the growth of closed-loop payment systems, and at the financial layers behind that growth.
Merchant & POS
A Credit Voucher (Refund Document) is a document issued by the merchant for the refund or cancellation of a good or service that a cardholder purchased using a credit card, or to correct an overcharge made by mistake.
Credit Card
To issue a card, the necessary certifications must be obtained from brands such as MasterCard, Visa, Troy, and Discover, and the card must be made available for cardholder use. Banks aim to increase customer loyalty by running points programs and similar campaigns.
Credit Card
If you exceed your limit by no more than 20% and close it in the next statement period, no more than twice a calendar year, only contractual interest is charged on the excess amount. You pay no additional fee.