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174 articles found
Credit Card
American Express, Discover, Visa and Mastercard have started working together on an infrastructure that lets leading US e-commerce sites accept one-click payments, so shoppers no longer need to type in all their card details.
HSM & Security
PEK is the abbreviation for Pin Encryption Key. The role of PEK is to encrypt PINs. There are two types of PEK: TPK (Terminal Pin Key) and ZWK (Zone Working Key).
HCE
There are three types of PIN strategy in HCE (Host Card Emulation): No PIN, Card PIN and Wallet PIN or customer biometric data. Each balances user experience and security differently.
Laws & Regulations
BSMV stands for Banking and Insurance Transaction Tax, levied on banking and insurance transactions. This post explains how it applies to payment institutions and e-money institutions under Expense Taxes General Communiqué No. 91, with an example.
Laws & Regulations
The Visa Core Rules and Visa Product and Service Rules documents define the fundamental rules that apply to all institutions in the Visa network. They are updated regularly, and all members are expected to follow the latest version.
Clearing
DE03/Reimbursement Attribute carries the Reimbursement Value of a transaction. BKM uses this information as the basis for calculating interchange fees and charges between member banks.
Merchant & POS
In EMV-based debit card transactions, PIN verification is decisive for both security and liability. What happens when a card that only supports online PIN is sent to the issuer without a PIN, and the issuer approves it? Who owns the risk?
Payment Systems
After switching to response code 70 for contactless limit-exceeded cases, we found that some overseas POS devices and acquirers did not handle it as expected. This post covers why the problem lies in the ecosystem and how to address it.
Payment Systems
Online PIN is verified by the card-issuing institution through the message itself, while Offline PIN is verified on the chip. This article explains the difference and when PIN bypass is allowed.
ATM
A Bitcoin ATM (BTM) is a specialized kiosk designed for Bitcoin transactions, letting users buy and sell Bitcoin. General features: it enables Bitcoin purchases and sales, and while it visually resembles traditional ATMs...
Courier & Delivery
Barcode numbers are essential for the Courier system, since cards are distributed using the barcode number. So does the barcode number have a generation algorithm, or is it just randomly generated? The barcode number does have a generation algorithm.
Fraud
Recently the following news story appeared in the papers. Two things stood out: the hacker was a former banker, and the device he used to clone cards. In banking fraud, insiders who know the system's weak points can build schemes customers never notice.