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Merchant & POS
Address Verification Service (AVS) is a fraud prevention system that helps limit fraud and chargebacks when used effectively. It verifies that the address a customer enters matches the cardholder's address on file with the issuer.
Credit Card
From the invite-only American Express Centurion Card to the diamond-studded Dubai First Royal MasterCard, discover the world's most exclusive credit cards.
Merchant & POS
CAVV and AAV are verification codes used in 3D Secure transactions to ensure transaction integrity and security. CAVV is used by Visa, while AAV is used by Mastercard.
Payment Systems
One of the most notable recent developments in card payments is that contactless limits are no longer fixed and can be managed dynamically per customer. Mastercard and Visa are taking different but complementary approaches, and ISO 8583 may need to evolve with them.
Merchant & POS
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.
Credit Card
PVV is the number encoded on a card's magnetic stripe that allows the cardholder's PIN to be verified by ATMs and POS terminals. It is a 4-digit cryptogram calculated through a cryptographic operation using the PIN and card data. The real result is longer than 4 digits.
Security
An external network scan run every 3 months by an Approved Scanning Vendor authorized by card schemes such as MasterCard and Visa, required for PCI DSS compliance. It checks whether merchant systems are protected against external threats.
Credit Card
When we think of a credit card, we picture one printed with the Card Number, Cardholder Name, Expiration Date, and CVV2 information. But what if we told you there is a card with no numbers on it at all? It may sound strange at first, but...
HSM & Security
TPK stands for Terminal PIN Key. It is a data encryption key used to encrypt PINs for transmission between a terminal and the terminal's bank (acquirer) within a local network. Learn how TPK is used in POS and ATM devices.
Credit Card
CVV is short for Card Verification Value, a term used by Visa. CVC is short for Card Verification Code, a term used by MasterCard. The CVV/CVC code is used for cardholder verification and to reduce fraud risk.
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.