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Merchant & POS
UnionPay International (UPI) is a China UnionPay subsidiary founded in November 2012. Together with more than 1,000 institutions worldwide, UPI provides international card acceptance in 160 countries and card issuance in more than 40 countries and regions.
3D Secure
Especially with the growth of the internet, credit card transactions have started shifting from physical POS terminals to virtual POS terminals. In virtual transactions, the 3D Secure structure is used instead of the card PIN entered in physical transactions. So how is a transaction's…
Merchant & POS
Checking whether the transaction receipt is printed after a POS transaction, and verifying the amount on it, has probably become a habit for all of us. So what about contactless transactions?
HSM & Security
ZPK, also known as the PIN Protection Key, is a data encryption key that is distributed automatically and used to encrypt PINs. It is also referred to as the 'Working Key'. This key allows PIN information to be carried securely across the network.
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
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.
Online & Authorization
F53 - PIN Encryption Control Information. When online PIN data is present, sending the F53 value is mandatory, except when DUKPT information is carried in Field 63, Tag 01. F53 consists of the following components.
Merchant & POS
The batch number is kept on the POS, incremented by 1 at each end of day, used to transfer transactions to the merchant account and for reconciliation. It's tracked on both the POS and the bank's system.
Merchant & POS
Today, credit cards play an important role in our daily lives. We can carry out almost all of our transactions without carrying cash, using our credit card instead. During a purchase, we hand our card to the cashier and enter our PIN at the POS terminal.
Merchant & POS
Chip&Pin, introduced in Turkey on March 31, 2006, is a payment method that greatly reduces the risks of card copying and loss or theft fraud. The chip on the card reduces copying risk, while the 4-digit PIN prevents unauthorized use of a lost card.
Credit Card
Today, as cash use steadily declines and credit card use keeps rising, using credit cards in line with one's income -so to speak, stretching your legs only as far as your blanket reaches- benefits both the cardholder and the country, as well as merchants.
Chargeback
A chargeback is when a cardholder asks the issuing bank to refund a transaction made without their knowledge. It cannot be prevented entirely, but simple precautions can minimize the risk. Here is how the process works and what cardholders should do.