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Diagram showing payment systems components managed in-house by a bank

Merchant & POS

What Is 'In-house' in the World of Payment Systems?

In-house is a term widely used in the world of payment systems. It means that payment systems applications are managed end-to-end within the bank's own systems, both in terms of code and process.

Diagram illustrating the POS batch upload reconciliation process

Merchant & POS

What is Batch Upload?

When a transaction is made through a POS, it is recorded both on the POS itself and in the acquiring bank's authorization system. At batch close, the POS sends all its transactions to the bank, which reconciles them against its own records.

New BIN card product launch process

Credit Card

What Happens When a Product Is Launched Under a New BIN?

When banks launch a new card product, they can do it under an existing BIN or a new one. A new BIN requires much more work: BKM announces it, every bank defines it and every POS has to download it.

Diagram explaining the Easy Address service used with the FAST instant payment system

FAST

What Is Easy Address (Kolay Adres)?

The Instant and Continuous Transfer of Funds (FAST) System lets customers send payment instructions 24/7 through bank systems, independent of EFT. This article explains what Easy Address is, how to register one and how transfers work.

Diagram illustrating BKM TechPOS shared POS infrastructure

Merchant & POS

What is BKM TechPOS?

BKM TechPOS is an infrastructure through which card acquirers and POS/cash register manufacturers can interoperate via BKM, letting all participating banks provide card acceptance services on a single device.

Diagram illustrating clearing and settlement in payment systems

Clearing

What Are Clearing and Settlement?

Clearing: the transmission of transfer orders sent to the system, mediating their mutual delivery, obtaining authorization prior to settlement in some systems, and netting payment orders.

Screenshot illustrating how a payment gateway connects an e-commerce site to a bank

Online & Authorization

What is a Payment Gateway?

A payment gateway is the high-security connection banks provide for purchases made with a credit or debit card. Learn how it is set up and why it protects cardholder data.

Diagram illustrating the PSD (Payment Services Directive) regulatory framework

Merchant & POS

What is PSD (Payment Services Directive)?

PSD stands for Payment Services Directive, known as the Payment Services Law. It took effect in EU countries in 2009, and in 2015 new revisions were announced as PSD1, aiming to build an efficient, fast, secure, and competitive payment market.

Close-up of a credit card, illustrating a transaction pending in open authorization

Merchant & POS

Can an Open-Authorization Transaction Be Cancelled?

Open authorization covers the period between authorization, POS batch close, the bank's end-of-day process, and clearing. Learn which steps allow cancellation versus refund, and what a cardholder should do.

Diagram showing how an open authorization moves to a card statement after batch close and clearing

Credit Card

What Is an Open Authorization?

In credit card transactions made through a POS, receiving approval alone is not enough for the transaction to post to the card's statement period; settlement must also take place. The settlement period, known as the open-authorization waiting time, varies by transaction type.

GO Secure Payment logo

Merchant & POS

What Is Secure Payment (GO)?

GO Secure Payment is a system developed by BKM that verifies cardholders using a one-time password (OTP) during online purchases made with TROY cards, providing banks with a secure verification platform without needing to store card data.

A POS terminal screen for changing the batch number

Merchant & POS

How to Change the POS Batch Number

The batch number is kept on the POS, incremented by 1 at each end of day, used to transfer transactions to the merchant account and for reconciliation. It's tracked on both the POS and the bank's system.