Search
174 articles found
Merchant & POS
An offline transaction is one approved by the card and the POS themselves, without going to any system (the card's bank or the POS's bank), when a chip card transaction is made at a POS. For this reason, some sectors considered risky are restricted.
ATM
Although we can now carry out almost all branch transactions at an ATM, for most of us an ATM is still just a machine for depositing and withdrawing cash. Today, without a card, we can use our phones to deposit and withdraw cash via QR code.
Fraud
Sometimes committing fraud by exploiting system vulnerabilities is harder than exploiting human weaknesses. Fraud that exploits such human weaknesses is called social engineering.
Payment Institutions & E-Money
The Law defines e-money as monetary value issued in exchange for funds accepted by the issuer, stored electronically, used for payment transactions and accepted as a payment instrument by persons other than the issuer. This post explains e-money institutions and the services they may provide.
Merchant & POS
Card storage is a system, secured with PCI DSS certification, for storing credit and debit card details safely. It saves consumers from entering their card details again and again on frequent purchases.
Merchant & POS
Loading parameters onto a POS transfers BIN lists, key data, and refund/cancellation authorizations from the management system onto the terminal. Learn how and when it happens.
Payment Institutions & E-Money
In general, electronic money is monetary value stored on a protected technological device. Turkish law defines it under Law No. 6493 as electronically stored value issued against funds and accepted by third parties as a means of payment.
Merchant & POS
To accept a card brand such as Mastercard or Visa, a POS must be certified for that brand. Which brands a POS accepts is the bank's decision.
ISO 8583
DE 44 - ADDITIONAL RESPONSE DATA is used to provide other supplementary data that may be needed in authorization, as a response to the authorization message. The Card Authentication Results Code is sent in position 9, and the CAVV Result Code is sent in position 15.
ATM
Did you know that when a transaction is attempted with another bank's card at an ATM, the PIN check happens not when the card is inserted, but when the transaction is sent for authorization? (Deposits are the exception.)
EMV
The Card Block command is used after card issuance to deactivate all applications within the ICC, including applications that could be selected indirectly. The components of the command are explained below.
Merchant & POS
Introduction: When a card (credit card/debit card/prepaid card) is used at an ATM or POS, data must be carried securely between systems. For example, in a store sale, the POS initiates the transaction, which must reach the cardholder's bank intact.