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Merchant & POS
For a transaction to go through clearing, the card-issuing bank and the merchant bank must be different. If they are the same, the transaction is not subject to clearing and is processed directly by the bank.
Merchant & POS
Magnetic Secure Transmission (MST) is a mobile payment technology in which devices such as smartphones emit a signal that mimics the magnetic stripe on a traditional payment card, letting a physical card's POS use be imitated without upgrading terminal software or hardware.
HCE
Tokenization generates secure data from a credit card number, using specific algorithms, for use during authorization. In CNP transactions, it removes the risk of storing or compromising the original card number.
Merchant & POS
Contains the terminal-resident data objects (tags and lengths) that the ICC needs when processing the GET PROCESSING OPTIONS command. In short, it is the list of information the card requests from the terminal before starting the transaction.
Merchant & POS
PIN Transaction Security (PTS) verifies that card data and PIN information are used for a payment transaction. It is a set of modular evaluation requirements managed by the PCI Security Standards Council for PIN-accepting terminals.
Security
A Qualified Security Assessor (QSA) is a person approved by the PCI Security Standards Council to audit merchants for compliance with the Payment Card Industry Data Security Standard.
ISO 8583
We covered the ISO 8583 basics in an earlier article. This post explains the ISO 8583 message structure in detail: every ISO 8583 message consists of three main parts - the MTI (Message Type Indicator), the Bitmap, and the Data Elements.
HCE
A tokenized card number replaces a physical card number so transactions can be carried out securely. It is generated by the TSP (Token Service Provider), used by the cardholder or merchant, and travels across the payment systems network.
Credit Card
Banks must go through a costly, arduous process to issue cards (issuer) and accept cards (acquirer), paying high entry fees to international license providers and local organizations such as BKM.
FAST
To offer the Easy Address service, an institution needs approval from the Central Bank of the Republic of Türkiye (CBRT), documented eligibility to participate in FAST or EFT, and completed administrative and technical processes with BKM.
Fraud
Chargeback is the process of refunding a credit card payment when the goods or services that should have been received were not, or when transactions not made by the cardholder are identified. In Turkish it is translated as reversal of presentment.
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.