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Illustration of the Mastercard Data Integrity Monitoring Program for transaction data quality

Credit Card

What Is the Data Integrity Monitoring Program?

Published by Mastercard on 24 May 2019, the Data Integrity Monitoring Program monitors transactions (authorization, clearing, chip, chargeback, etc.) in the Mastercard system to reduce erroneous transactions and increase transaction success rates.

Conceptual illustration of a brain-computer interface chip connected to a human brain

Payment Systems

What Could Neuralink Change in Payment Systems?

Elon Musk was set to unveil Neuralink, a brain-computer interface. What is Neuralink, and how might payment systems change if payments, cards, ATMs and POS devices move from phones to a chip in the brain?

Illustration representing communication protocols used in POS payment systems

Merchant & POS

What Are POS Sub-Protocols and Their Use Cases in Turkey?

In payment systems, every exchange between POS devices and bank or payment institution systems runs on a specific messaging standard, generally based on ISO 8583. However, each country, bank, or switch network defines its own version of this standard.

Diagram explaining how a pre-authorization transaction works on a credit card

Merchant & POS

What Is a Pre-Authorization Transaction?

An operation that allows a credit card's limit to be blocked for a period, due to the nature of the product or service sold. Preferred mainly by companies in travel, tourism, and car rental.

Illustration representing credit card fraud and online payment security risks

Fraud

What is Fraud? What are the Types of Fraud?

With the growth of credit and debit card usage and rising e-commerce transaction volumes, there has been a serious increase in exploiting user negligence to harm customers. Fraud means using someone else's card at a merchant or ATM to gain unjust profit.

Diagram showing the pre-authorization closing process flow on a POS terminal

Merchant & POS

What Is Pre-Authorization Closing?

Pre-authorization closing turns a pre-authorized transaction into a financial one, posting it to the merchant and cardholder accounts. See how amounts and available limit are affected.

Hand entering a PIN code on a card payment terminal

Credit Card

What should be considered when setting a card PIN?

A credit card is one of the most important payment tools in our lives, which is why keeping it secure is extremely important. So how do we secure a credit card? The most important security measure is the card PIN.

Diagram illustrating the difference between Online PIN and Offline PIN verification in card payments

Payment Systems

What are Online and Offline PIN? Can PIN be bypassed?

Online PIN is verified by the card-issuing institution through the message itself, while Offline PIN is verified on the chip. This article explains the difference and when PIN bypass is allowed.

Diagram illustrating floor limit management on a POS terminal

Merchant & POS

How is Floor Limit Managed on POS?

The limit that governs the maximum amount for which an offline transaction can be made on a POS terminal is called the Floor Limit. POS parameter management programs (usually GMS) maintain 3 parameters for floor limit management.

Embossed debit card with raised card number and cardholder name

Debit Card

What is an embossed debit card?

The main difference between embossed debit cards and standard debit cards is that the card number, cardholder name, and expiration date are printed in raised, embossed format rather than flat.