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2. E-commerce payment system - Wikipedia

   en.wikipedia.org/wiki/E-commerce_payment_system

   There are varied types of electronic payment methods such as online credit card transactions, e-wallets, e-cash and wireless payment system. [5] Credit cards constitute a popular method of online payment but can be expensive for the merchant to accept because of transaction fees primarily. Debit cards constitute an excellent alternative with ...

3. Payment processor - Wikipedia

   en.wikipedia.org/wiki/Payment_processor

   Payment processor. A payment processor is a system that enables financial transactions, commonly employed by a merchant, to handle transactions with customers from various channels such as credit cards and debit cards or bank accounts. They are usually broken down into two types: front-end and back-end. Front-end processors have connections to ...

4. Payment card interchange fee and merchant discount antitrust ...

   en.wikipedia.org/wiki/Payment_Card_Interchange...

   An independent auditor will review this aspect to confirm compliance. [5] The agreement now awaits the green light from the U.S. District Court for the Eastern District of New York, which, if approved, will be a significant step towards addressing anti-competitive practices in the credit card processing industry. [6]

5. Payment gateway - Wikipedia

   en.wikipedia.org/wiki/Payment_gateway

   A payment gateway is a merchant service provided by an e-commerce application service provider that authorizes credit card or direct payment processing for e-businesses, online retailers, bricks and clicks, or traditional brick and mortar. [1] The payment gateway may be provided by a bank to its customers, but can be provided by a specialised ...

6. Get help with your AOL billing questions

   help.aol.com/articles/account-management...

   The $1 charge won’t actually be deducted from the account. The bank for the credit card should remove the charge within a day or two. If you used a credit card for age verification and noticed the charge hasn’t been removed after a few days, please contact your bank or credit card company.

7. 3-D Secure - Wikipedia

   en.wikipedia.org/wiki/3-D_Secure

   3-D Secure. 3-D Secure is a protocol designed to be an additional security layer for online credit and debit card transactions. The name refers to the "three domains" which interact using the protocol: the merchant/acquirer domain, the issuer domain, and the interoperability domain. [1]