Skip to content

Search

"credit card"

350 articles found

Illustration showing how the Luhn algorithm calculates and validates a credit card check digit

Credit Card

How is a credit card number generated? (Luhn Algorithm)

The Luhn algorithm was developed by Hans Peter Luhn and IBM in 1954. It is also known as the Luhn Check or Mod Check. It is used in two ways: preparing a given number according to the Luhn algorithm, and validating a given number using the Luhn algorithm.

Expiration date printed on the front of a payment card

Credit Card

What Is a Card Expiration Date?

What is a card expiration date? Learn why banks print this date on every card, how it's used in purchases, and what happens once it passes.

Diagram of BKM public collection solutions including transport and payment gateway services

Payment System Institutions

What Are BKM Public Collection Solutions?

BKM (Interbank Card Center) was founded in 1990 to clear and reconcile credit and debit card payments. This post covers its public collection solutions: contactless transport in Konya, SGK premium payments and e-Government gateway fees.

Overview of the advantages of a business credit card

Credit Card

What Is a Business Card?

A business credit card is a credit card offered by banks to businesses so they can make company expenditures and track and manage those expenses.

Credit card lying on a flat surface representing a supplementary card linked to a primary account

Credit Card

What Is a Supplementary Card?

A financial card product issued against a primary card, with its own card number, expiration date, authority, limit, and PIN. Using a supplementary card is ideal for making purchases from more than one card while keeping all spending on a single statement.

Illustration representing a virtual card used for mail order and e-commerce payments

Credit Card

What is a Virtual Card?

A credit card number created based on a credit card, not physically printed, usable in all virtual purchases (mail order, e-commerce, etc.). It is generated instantly upon request, usable right away, created with a zero limit, and free of charge.

Illustration of Host Card Emulation (HCE) enabling contactless mobile payments

Online & Authorization

What Is HCE?

HCE lets a mobile device's operating system emulate the cards we use daily (credit, debit, gift cards, etc.) to make contactless payments via NFC. In other words, our phones behave like the cards we use for payments.

Diagram illustrating the ISO/IEC 7810 card dimension standards

Credit Card

What is ISO/IEC 7810?

The ISO/IEC 7810 standard is an international standard that defines the physical characteristics of cards (credit cards, ATM cards, ID cards, etc.) such as physical dimensions, bending, flame and chemical resistance, temperature and humidity resistance, toxicity, and flammability.