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  2. Gateway address - Wikipedia

    en.wikipedia.org/wiki/Gateway_address

    Physical gateway address. The gateway also operates at the data link layer (Layer 2) of the OSI network model. The physical gateway address is called the media access control(MAC) address or burned in address (BIA). The physical address is assigned when the device is manufactured, and cannot be changed.

  3. QR code payment - Wikipedia

    en.wikipedia.org/wiki/QR_code_payment

    A QR code payment is a mobile payment method where payment is performed by scanning a QR code from a mobile app. [1] This is an alternative to doing electronic funds transfer at point of sale using a payment terminal. [2] This avoids a lot of the infrastructure traditionally associated with electronic payments such as payment cards, payment ...

  4. Unified Payments Interface - Wikipedia

    en.wikipedia.org/wiki/Unified_Payments_Interface

    Unified Payments Interface (UPI) Product type Instant inter-bank payment system Owner National Payments Corporation of India Produced by National Payments Corporation of India Country India Introduced 11 April 2016 ; 8 years ago (2016-04-11) Website www.upichalega.com Unified Payments Interface, commonly referred to as UPI, is an Indian instant payment system as well as protocol developed by ...

  5. QR code - Wikipedia

    en.wikipedia.org/wiki/QR_code

    The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; the pattern of position detection was found and determined by applying the least-used ratio (1:1:3:1:1) in black ...

  6. Application-level gateway - Wikipedia

    en.wikipedia.org/wiki/Application-level_gateway

    An application-level gateway ( ALG, also known as application layer gateway, application gateway, application proxy, or application-level proxy) is a security component that augments a firewall or NAT employed in a mobile network. [1] [2] It allows customized NAT traversal filters to be plugged into the gateway to support address and port ...

  7. Mobile payment - Wikipedia

    en.wikipedia.org/wiki/Mobile_payment

    QR, or "quick response", bar codes were designed to contain the meaningful information directly in the bar code. QR codes can be of two main categories: [49] [ citation needed ] The QR code is presented on the mobile device of the person paying and scanned by a POS or another mobile device of the payee

  8. NETS (company) - Wikipedia

    en.wikipedia.org/wiki/NETS_(company)

    NETS Debit on various payment terminals (clockwise from top-left): Verifone VX520, Verifone VX820, Ingenico ICT250, Ingenico ISC250. Network for Electronic Transfers, colloquially known as NETS, is a Singaporean electronic payment service provider. Founded in 1986 by a consortium of local banks, it aims to establish the debit network and drive ...

  9. Default gateway - Wikipedia

    en.wikipedia.org/wiki/Default_gateway

    In a home or small office environment, the default gateway is a device, such as a DSL router or cable router, that connects the local network to the Internet. It serves as the default gateway for all network devices. Enterprise network systems may require many internal network segments. A device wishing to communicate with a host on the public ...

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