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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. 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 ...

  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. 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 ...

  6. How to Create a Contactless Menu with Tripadvisor ...

    www.tripadvisor.com/ForRestaurants/r13843

    Print your QR code: Choose to either print the code yourself or save the image to get stickers or other assets made at your local print shop. Don’t worry, the code is specific to your business and won’t change — even if you update your menu. Display your QR code: Place your QR code throughout your restaurant so guests can easily scan it ...

  7. Aztec Code - Wikipedia

    en.wikipedia.org/wiki/Aztec_Code

    The reader must accept and ignore a partial code at the end of the message, as long as it is all-ones. Additionally, if the total number of data bits available in the symbol is not a multiple of the codeword size, the data string is prefixed with an appropriate number of 0 bits to occupy the extra space.

  8. Can a Boarding Pass be scanned from photo on cell phone - Air ...

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

    Many phone boarding passes use QR code based images which are easier to read from pixelated phone screens. A photo of the paper boarding pass on your computer may not be readable off your phone due to image degradation. But most gate computers can print a new boarding pass if yours can't be read. Or as suggested get a paper bp printed at the ...

  9. Barcode Scanner (application) - Wikipedia

    en.wikipedia.org/wiki/Barcode_Scanner_(application)

    Barcode Scanner scanning a QR code. The application Barcode Scanner is an Android app, from the open-source project ZXing (short for Zebra Crossing ), that allows an Android device with imaging hardware (a built-in camera) to scan barcodes or 2D barcodes and retrieve the data encoded. [2] Information encoded often includes web addresses ...

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