This term is simply the industry’s word for the collection of information from a point-of-sale device. This can happen when the card is swiped or when information is manually entered. It is nothing more than the collection of information by whatever means are appropriate.
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?