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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. [5] [6] [7] 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; [8] the pattern of position detection was found and determined by applying the least-used ratio (1:1:3 ...

3. Smallpdf.com - Wikipedia

   en.wikipedia.org/wiki/Smallpdf.com

   Since then, the online platform has introduced over 16 PDF tools to convert, compress and edit PDF documents. [6] As of 2019, approximately 25 million unique users use Smallpdf every month. [7] In November 2018, it was announced that Smallpdf would integrate with Dropbox as part of the 'Dropbox Extensions', to provide Dropbox users with PDF ...

4. Automatic identification and data capture - Wikipedia

   en.wikipedia.org/wiki/Automatic_identification...

   Data encoder. A code is a set of symbols or signals that usually represent alphanumeric characters. When data are encoded, the characters are translated into machine-readable code. A label or tag containing the encoded data is attached to the item that is to be identified. Machine reader or scanner.

5. Turning a US Covid Vax paper record into a QR code - Cairo ...

   www.tripadvisor.com/ShowTopic-g294201-i9404-k...

   Then I found a (free) online QR Code Generator software to create a QR code linked to the PDF document and added it to my printed copy of the PDF document. So the QR code is basically the same as my printed document, but with some additional information that I added --- address of Walgreens location where I obtained my vaccine.

6. QR code on my phone for italo and Trenord - Milan Forum

   www.tripadvisor.com/ShowTopic-g187849-i143-k...

   2. Re: QR code on my phone for italo and Trenord. 5 years ago. The QR code is an advanced "bar code." It is the square mosaic of black squares and it carries maybe as much as 1,000 times more information than an old bar code. I now see that the QR code on the Trenord paper or .pdf ticket has the "PNR number" above it.

7. QR reader boarding pass: How does it work? - Air Travel Forum

   www.tripadvisor.com/ShowTopic-g1-i10702-k4887012...

   Having not actually used a QR reader or code properly, as you can gather, I'd got the wrong end of the stick - or is that reversed the way they work! So the reader on my phone reads codes elsewhere (and has no relevance to boarding passes), the code sent to my phone is read/scanned by something/body else, and can be used in lieu of a physical ...