Topics
The map of payment systems
The questions and articles of each area, under one heading.
Cards
The issuing journey of plastic and digital cards.
Acceptance and channels
Where a payment is accepted — at the merchant, an ATM, or remotely.
Merchant and POS
The merchant's acceptance chain, from onboarding to end-of-day, physical terminal to virtual POS.
ATM
Cash withdrawal, balance inquiry and card recognition between the terminal and the host.
E-commerce
Identity, 3-D Secure and stored card data in a card-not-present environment.
Mobile payment
Acceptance moved to the phone through wallets, HCE and QR codes.
Contactless payment
How limits, CVM and the offline counter affect a PIN-free tap.
Infrastructure
The layer where a transaction is authorized, routed and settled.
FAST
Instant account-to-account transfer and where it departs from the card schemes.
Payment institutions and e-money
License scope, capital requirements and what a fintech's license actually covers.
ISO 8583
The fields of an authorization message, retries and reversals.
EMV
Application selection, cardholder verification and risk parameters on a chip card.
Risk and regulation
Fraud, chargebacks and the rules payment systems operate under.
New models
Emerging payment models and technologies.
Open banking
Account information and payment initiation opened to third parties with the customer's consent.
Closed-loop payments
Off-scheme balances, loyalty, and a merchant building its own acceptance network.
Agentic commerce
Payment and authorization in commerce where a software agent carries out the purchase.