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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. 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 ...

4. Barcode reader - Wikipedia

   en.wikipedia.org/wiki/Barcode_reader

   A barcode reader or barcode scanner is an optical scanner that can read printed barcodes and send the data they contain to computer. [ 1] Like a flatbed scanner, it consists of a light source, a lens, and a light sensor for translating optical impulses into electrical signals. Additionally, nearly all barcode readers contain decoder circuitry ...

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 code for customs location - Bali Forum - Tripadvisor

   www.tripadvisor.com/ShowTopic-g294226-i7220-k...

   1. Re: QR code for customs location. The electronic customs declaration form can be filled out on line up to three days prior to arrival. You are then to scan on arrival in the customs hall however when we arrived it was not working, we just had to show the QR code on our phone.Very easy and straight forward.

7. QR code CUSTOMS. WiFi ? Or download code - Japan Forum

   www.tripadvisor.com/ShowTopic-g294232-i525-k...

   Now with only 1 QR code, you have to do your own passport scan between immigration and customs. Customs is apparently done by facial recognition. You just walk through an automatic gate without any officer physically inspecting your passport. I have always used screen capture of the QR code. Edited: 3:10 am, April 02, 2024.