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217 articles found
Merchant & POS
Almost all of us carry at least one credit card. Imagine losing your wallet with all your cards inside, and someone with bad intentions finding it and using the cards without a PIN. Who bears the responsibility?
Payment Systems
Before describing the Onus Installment process, it is better to first answer: what is an Onus transaction? An Onus transaction is when the acquirer and issuer are the same institution, so the transaction is processed through that institution.
Payment Systems
EAST, the European Association for Secure Transactions, is a non-profit organization working on ATM, terminal and payment security. It was founded in 2004 as the European ATM Security Team.
Merchant & POS
The Central Bank of the Republic of Turkey has capped the commission banks charge merchants on credit card purchases, effective for transactions after November 1, 2019. What does this mean for cardholders and banks?
Merchant & POS
Since the MCC code is a merchant's category code, it's critical for the checks performed during merchant onboarding and authorization, including campaigns and restrictions.
Chargeback
Compliance means adherence to card scheme rules. Outside chargebacks, it is how a bank that loses money because card payment organization rules were broken recovers that amount from the party that caused the loss.
ISO 8583
F54 - ADDITIONAL AMOUNTS is the additional amount field used in transactions. It can take different values depending on the transaction, such as carrying account balance information for balance inquiries.
ISO 8583
F64 — Message Authentication Code (MAC): verifies the origin and text of the message between the sender and the receiver.
Merchant & POS
Loading parameters onto a POS transfers changes made in the POS Management system (authorization, limits, card BIN list, etc.) onto the POS. There are 3 ways to do it.
Merchant & POS
BKM has changed the domestic transaction flows for contactless transactions above and below the CVM limit. For above-limit transactions, the issuer can now ask the cardholder to re-enter the PIN instead of terminating the transaction after an incorrect PIN (DE39 = 55).
ISO 8583
DE 52 — Personal Identification Number (PIN) Data: the field that holds the PIN data. PIN verification is carried out based on this field.
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.