Skip to content

Search

"system operator"

190 articles found

YTH clearing file prefix fields F32, F93, F94 and F100

Clearing

What Are the Prefix Fields in the YTH IN File?

YTH stands for Yurtiçi Takas Hesaplaşma (Domestic Clearing and Settlement), the general name of the clearing system managed by BKM. In the clearing system, prefix values are held in fields F32, F93, F94 and F100.

Cryptocurrency mining concept illustration showing mining hardware and blockchain blocks

Cryptocurrency

What Is Cryptocurrency Mining?

Mining is the production of cryptocurrency through hardware and software, as well as the recording and confirmation of cryptocurrency transfers. Because block difficulty rises with each new unit, mining requires very powerful processors.

Diagram explaining the ATM reject bin where unaccepted banknotes are deposited

ATM

What Is Reject (the Reject Bin)?

It's a term used in ATM systems within payment systems. In ATM transactions, cash in question is placed into a separate compartment for review, called the reject bin. Retract is the customer's holding bin; reject is the ATM's reject bin.

Illustration of an ATM cash dispenser showing the retract and reject cash compartments

ATM

What Is Retract?

Retract is a term used in ATM systems. When cash already presented to the customer is not taken, it is diverted into a compartment called retract, as opposed to the reject compartment used for unusable banknotes.

Illustration explaining the concept of the first online transaction after a card PIN change

Merchant & POS

What Does First Online Transaction Mean?

In payment systems, an online transaction means the transaction is sent to the card or POS/ATM bank at the moment it occurs, and required checks are obtained from that system. So does every transaction happen online? Of course not. Especially with contactless...

Payment card being swiped on a tampered POS device in a credit card fraud scheme

Credit Card

A New Method in Credit Card Fraud!!

Credit card fraud keeps changing form, but the aim is always to trick the cardholder into giving up card details. Fraudsters posing as delivery couriers now copy cards on modified POS devices. Here is how the scam works and how to protect yourself.

Diagram illustrating how a recycling ATM reuses deposited banknotes for withdrawals

ATM

What Is a Recycling ATM?

The word literally means recycled or circulating. In payment systems, it refers to physically dispensing money deposited at ATMs to customers who want to withdraw cash, adding deposits straight into the withdrawal pool.

Diagram explaining what an EMV Issuer Script is and how it updates card chip parameters

EMV

What Is an EMV Issuer Script?

An EMV Issuer Script is a system that lets the issuer (the institution that issues the card) update and change the parameters and values on the card chip while it remains in use, reducing fraud over the card's lifetime.

News clipping about the arrest of hacker Hakan Karacaoglu

Fraud

Famous Hacker Caught After 8 Years

Recently the following news story appeared in the papers. Two things stood out: the hacker was a former banker, and the device he used to clone cards. In banking fraud, insiders who know the system's weak points can build schemes customers never notice.