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2. Payment processor - Wikipedia

   en.wikipedia.org/wiki/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.

3. Merchant services - Wikipedia

   en.wikipedia.org/wiki/Merchant_services

   Merchant services is a broad category of financial services intended for use by businesses. [1] In its most specific use, it usually refers to merchant processing services that enables a business to accept a transaction payment through a secure (encrypted) channel using the customer's credit card or debit card or NFC/RFID enabled device.

4. Payment card industry - Wikipedia

   en.wikipedia.org/wiki/Payment_card_industry

   The payment card industry consists of all the organizations which store, process and transmit cardholder data, most notably for debit cards and credit cards.The security standards are developed by the Payment Card Industry Security Standards Council which develops the Payment Card Industry Data Security Standards used throughout the industry.

5. Payment service provider - Wikipedia

   en.wikipedia.org/wiki/Payment_service_provider

   A payment service provider (PSP) is a third-party company that allows businesses to accept electronic payments, such as credit card and debit card payments. PSPs act as intermediaries between those who make payments, i.e. consumers, and those who accept them, i.e. retailers. [1]

6. Add, edit, or delete a payment method for AOL services

   help.aol.com/articles/update-your-payment-method

   If your card number has changed, you must add a new card. 1. Sign in to your My Account page. 2. Click My Wallet. 3. Click Payment Methods. 4. Click Add Credit or Debit Card. 5. Enter the new info. 6. Click Submit.

7. Payment card - Wikipedia

   en.wikipedia.org/wiki/Payment_card

   The use of debit cards has become widespread in many countries and has overtaken use of cheques, and in some instances cash transactions, by volume. Like credit cards, debit cards are used widely for telephone and internet purchases. Debit cards can also allow instant withdrawal of cash, acting as the ATM card, and as a cheque guarantee card ...