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  2. 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 ...

  3. Google Authenticator - Wikipedia

    en.wikipedia.org/wiki/Google_Authenticator

    The Google Authenticator app for Android was originally open source, but later became proprietary. Google made earlier source for their Authenticator app available on its GitHub repository; the associated development page stated: "This open source project allows you to download the code that powered version 2.21 of the application.

  4. Masahiro Hara - Wikipedia

    en.wikipedia.org/wiki/Masahiro_Hara

    The code was introduced in 1994. In 2021, QR codes were being used to book and track COVID-19 tests and contact tracing. Hara has stated that he would like to develop QR codes for additional medical purposes, including imaging such as x-rays or electrocardiogram data. Hara still works for Denso as of 2022.

  5. Mobile tagging - Wikipedia

    en.wikipedia.org/wiki/Mobile_tagging

    Mobile tagging. Mobile tagging is the process of providing data read from tags for display on mobile devices, commonly encoded in a two-dimensional barcode, using the camera of a camera phone as the reader device. The contents of the tag code is usually a URL for information addressed and accessible through Internet. the mobile tagging process.

  6. Mobile app development - Wikipedia

    en.wikipedia.org/wiki/Mobile_app_development

    Mobile app development is the act or process by which a mobile app is developed for one or more mobile devices, which can include personal digital assistants (PDA), enterprise digital assistants (EDA), or mobile phones. [1] Such software applications are specifically designed to run on mobile devices, taking numerous hardware constraints into ...

  7. 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 ...

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