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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. List of generic and genericized trademarks - Wikipedia

   en.wikipedia.org/wiki/List_of_generic_and...

   The following three lists of generic and genericized trademarks are: marks which were originally legally protected trademarks, but have been genericized and have lost their legal status due to becoming generic terms, marks which have been abandoned and are now generic terms. marks which are still legally protected as trademarks, at least in ...

4. Unified Payments Interface - Wikipedia

   en.wikipedia.org/wiki/Unified_Payments_Interface

   www .upichalega .com. Unified Payments Interface, commonly referred to as UPI, is an Indian instant payment system as well as protocol developed by the National Payments Corporation of India (NPCI) in 2016. The interface facilitates inter-bank peer-to-peer (P2P) and person-to-merchant (P2M) transactions. [1] [2] It is used on mobile devices to ...

5. Barcode - Wikipedia

   en.wikipedia.org/wiki/Barcode

   Barcode. A UPC-A barcode. A barcode or bar code is a method of representing data in a visual, machine-readable form. Initially, barcodes represented data by varying the widths, spacings and sizes of parallel lines. These barcodes, now commonly referred to as linear or one-dimensional (1D), can be scanned by special optical scanners, called ...

6. QR codes - Wikipedia

   en.wikipedia.org/?title=QR_codes&redirect=no

   QR codes. From the plural form: This is a redirect from a plural noun to its singular form. This redirect link is used for convenience; it is often preferable to add the plural directly after the link (for example, [ [link]]s ). However, do not replace these redirected links with a simpler link unless the page is updated for another reason (see ...

7. Help:Interwiki linking - Wikipedia

   en.wikipedia.org/wiki/Help:Interwiki_linking

   v. t. e. Interwiki linking can be a link to another project, to another language and both, to another project in another language . Interproject links: By adding a prefix to another Wikimedia project, internal link style ("prefixed internal link style") can be used to link to a page of another project. A system of short-handed link labels is ...