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2. List of online payment service providers - Wikipedia

   en.wikipedia.org/wiki/List_of_online_payment...

   The following is a list of notable online payment service providers and payment gateway providing companies, their platform base and the countries they offer services in: (POS -- Point of Sale ) Company

3. ACI Worldwide - Wikipedia

   en.wikipedia.org/wiki/ACI_Worldwide

   ACI Worldwide's products and services are used globally by banks, financial intermediaries such as third-party electronic payment processors, payment associations, switch interchanges, merchants, corporations, and a wide range of transaction-generating endpoints, including automated teller machines ("ATM"), merchant point of sale ("POS ...

4. Payment gateway - Wikipedia

   en.wikipedia.org/wiki/Payment_gateway

   Payment gateways are a service that helps merchants initiate e-commerce, in-app, and point of sale payments for a broad variety of payment methods. The gateway is not directly involved in the money flow; typically it is a web server to which a merchant's website or POS system is connected.

5. Worldpay Group - Wikipedia

   en.wikipedia.org/wiki/Worldpay_Group

   WorldPay started as an online multi-currency payment system in 1997. The founder Nick Ogden [4] partnered with National Westminster Bank to provide the financial systems and Andrew Birch [5] of Symbiant to provide the end user payment gateway.

6. 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 .

7. Contactless payment - Wikipedia

   en.wikipedia.org/wiki/Contactless_payment

   EMV contactless symbol used on compatible payment terminals. EMV stands for "Europay, Mastercard, and Visa", the three companies that created the standard.Contactless payment systems are credit cards and debit cards, key fobs, smart cards, or other devices, including smartphones and other mobile devices, that use radio-frequency identification (RFID) or near-field communication (NFC) for ...