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  2. 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 ]

  3. 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. [6] [7] [8] 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; [9] the pattern of the position detection markers was determined by finding the least-used sequence of ...

  4. Mobile payment - Wikipedia

    en.wikipedia.org/wiki/Mobile_payment

    QR code is a square two-dimensional bar code. QR codes have been in use since 1994. [48] Originally used to track products in warehouses, QR codes were designed to replace the older one-dimensional bar codes. The older bar codes just represent numbers, which can be looked up in a database and translated into something meaningful.

  5. Access badge - Wikipedia

    en.wikipedia.org/wiki/Access_badge

    The access badge contains a number that is read by a card reader. This number is usually called the facility code and is programmed by the administrator. The number is sent to an access control system, a computer system that makes access control decisions based on information about the credential. If the credential is included in an access ...

  6. Unified Payments Interface - Wikipedia

    en.wikipedia.org/wiki/Unified_Payments_Interface

    Nepal Rastra Bank began allowing Nepali citizens to pay merchants in India by scanning UPI QR codes from 27 June 2024. For commercial payments, there is a daily limit of ₹15,000 and a monthly limit of ₹100,000. [203] Fonepay handled over 100,000 UPI transactions in Nepal since February 2024, with a volume of over ₹250 million. [204]

  7. Access control - Wikipedia

    en.wikipedia.org/wiki/Access_control

    Common physical security access control with a finger print A sailor checks an identification card (ID) before allowing a vehicle to enter a military installation.. In physical security and information security, access control (AC) is the selective restriction of access to a place or other resource, while access management describes the process.

  8. QR Ph - Wikipedia

    en.wikipedia.org/wiki/QR_Ph

    QR Ph (officially the National QR Code Standard) is the standardized quick-response code system adopted in the Philippines, which is based on the Europay-Mastercard-VISA (EMV) standard. It serves as a swift and secure payment method for customers of both participating banks and non-bank electronic money issuers (EMI) in the country.

  9. Alipay - Wikipedia

    en.wikipedia.org/wiki/Alipay

    In 2020, Alipay used a QR code system to help in containing the COVID-19 outbreak. The health code system tags users one of three colors according to their location, basic health information and travel history. [36] "Beauty filters" were included to Alipay's face-scan payment system in a new upgrade that was released in July 2019.