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Closed-Loop Payments
Why does a coffee chain build its own loyalty program, and why does a payment app keep adding services? This post looks at how loyalty, data, and new services drive the growth of closed-loop payment systems, and at the financial layers behind that growth.
Closed-Loop Payments
Is Alipay a payment system, or a digital economy? In the previous post we discussed how Starbucks shows that payment systems can evolve into a different structure. At first the goal was to make payment easier for the customer. As the system grew, loyalty programs...
Credit Card
Credit card fraud is generally committed using the card itself, using card details without the card, via excess or duplicate withdrawals, or by seizing identity information. ATM card trapping is common, since ATMs hold the card during the transaction.
Laws & Regulations
The purpose of Law No. 5464 on Bank Cards and Credit Cards is to ensure the card payment system works effectively by regulating the issuance and use of bank and credit cards and the related clearing and netting processes.
Online & Authorization
In EMV, data is stored in Tag-Length-Value (TLV) format, and it is carried between the card, the POS terminal, and the authorization system in this same format. This post lists every EMV Tag, its type, and its description.
Merchant & POS
BKM publishes card usage data every three months. In the first half of 2020, card payments reached TL 500 billion, contactless payments tripled, and online card payments surged in the electronics and clothing sectors.
Payment Systems
This guide, prepared in line with the regulation and its annex on TR QR Code principles and rules, gives sample mobile payment flows and defines the TR QR Code data organization for merchant-presented and consumer-presented models.
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.
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.
Merchant & POS
QR code payments are growing, but without a common QR structure each code only works locally. EMVCo published a standard QR data structure so all payment schemes can share one QR code format at merchants.
Payment Systems
In payment systems, an “appeal” is the process of objecting to the outcome of a transaction dispute. It is usually discussed alongside chargebacks, but it plays a critical role in interbank dispute resolution, when a party asks the card scheme to re-evaluate a concluded decision.
HSM & Security
The CPoC standard, issued by the PCI Security Standards Council in 2019, is a data security standard that lets merchants accept contactless payments using a commercial off-the-shelf (COTS) mobile device with NFC.