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2. QR code payment - Wikipedia

   en.wikipedia.org/wiki/QR_code_payment

   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 ...

3. 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

4. Programming languages used in most popular websites

   en.wikipedia.org/wiki/Programming_languages_used...

   One thing the most visited websites have in common is that they are dynamic websites.Their development typically involves server-side coding, client-side coding and database technology.

5. QR Codes Are Reshaping Public Transit, But Are They Safe? - AOL

   www.aol.com/qr-codes-reshaping-public-transit...

   In most cases, those QR codes still connect to some form of data to make them work, so even when boarding public transit, a user might be giving the transit agency that data. Sarah Kaufman from ...

6. 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 ...

7. Unified Payments Interface - Wikipedia

   en.wikipedia.org/wiki/Unified_Payments_Interface

   As part of the Central Bank Digital Currency pilot project, Canara Bank has released the Unified Payments Interface compatible digital rupee mobile app. Without the need for a separate on-boarding procedure for CBDC for retailers, it will enable users to scan the existing UPI QR code and make payments using digital rupee.

8. Digital wallet - Wikipedia

   en.wikipedia.org/wiki/Digital_wallet

   A digital wallet, also known as an e-wallet or mobile wallet, is an electronic device, online service, or software program that allows one party to make electronic transactions with another party bartering digital currency units for goods and services. This can include purchasing items either online or at the point of sale in a brick and mortar ...

9. List of Amazon products and services - Wikipedia

   en.wikipedia.org/wiki/List_of_Amazon_products...

   The service, launched in April 2017, allows users to add between $5 and $500 (£5 and £250) to their accounts by paying with cash at a participating retailer, who scans a barcode linked to a customer's Amazon account. Users can present the app on paper, on the Amazon app, or as a text message sent by the Amazon website.