The EFTPOS division of VISA, Interlink operates mostly in the U.S. Unlike with a standard Visa debit card purchase, Interlink transactions are authenticated with a PIN and allow for the possibility of also getting cash back — or purchase and withdrawal — from the merchant as part of the process.
UniPay Gateway: Open Source Payment Gateway
How to Choose the Best Payment Solution
How to Own a Payment Gateway
What is a Payment Gateway
What is Recurring Billing?
How Payments Work
What Should an Ideal Payment Platform for Investors Look Like?