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Cover of the Visa Merchant Data Standards Manual document

Merchant & POS

What Is the “Merchant Data Standards Manual”? How Can I Access It?

Visa's Merchant Data Standards Manual covers classification, identification and data standard requirements for merchants, payment facilitators and marketplaces, including merchant naming, location and MCC rules. Here is what it contains and where to find it.

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.

Illustration of a card payment approved for a partial amount

Merchant & POS

What Is Partial Authorization?

Partial Authorization lets an issuer approve part of a transaction instead of declining it when the balance or limit is insufficient. This post covers how it works in ISO 8583, whether it is mandatory, and why it matters for the business.

Chart of the growth in card spending in Turkey in the first quarter of 2022

Merchant & POS

Card Payments Up 85%

According to the third Card Spending Analysis by TOBB and Visa, average monthly card spending in Turkey in the first quarter of 2022 rose 85 percent year on year, driven by e-commerce, debit cards, and contactless payments.

GrabPay Card Mastercard launch illustration

Credit Card

GrabPay Card Launched

Grab, one of Southeast Asia's ride-hailing companies with a strong interest in finance, has introduced the GrabPay Card. Like the Apple Card, the physical card carries no card number, name or expiry date.

Photo illustrating the use of a prepaid card

Credit Card

Is a Prepaid Card a Credit Card or a Debit Card?

A prepaid card may look like a debit card since it has no predetermined limit and purchases are limited to the amount loaded by the cardholder, but in terms of use and operating logic it differs significantly from both credit and debit cards.

Diagram showing how the iCVV code is generated for EMV chip cards

Credit Card

What Is iCVV? How Is It Generated?

iCVV stands for Integrated Circuit Card Verification Value. To prevent fraud, it is a CVV value generated similarly to the card's track data and stored on the card's chip. Visa uses the term iCVV; MasterCard and American Express use their own equivalents.

Illustration representing electronic payment systems

Payment Systems

What are Payment Systems?

Let's talk about payment systems, which we have heard more about since the internet entered our lives, and the basic structures behind them. The first credit card in the world was used in America in the 1920s.

Illustration of customer-based contactless card limit management

Payment Systems

Can a Card's Contactless Limit Be Managed on a Per-Customer Basis?

Contactless payment has greatly improved the user experience, yet its fixed transaction limit is a common complaint. Can this limit be managed dynamically per customer? This post covers the current situation, technical and regulatory requirements and the outlook.