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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. Visit Japan Web QR Code when filling out for a family member ...

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

    Maybe because we’ve used the Visit Japan Web before and our information is already in the system? At customs, we always go through with one QR code and there was never an issue. My suggestion is that if it's your first time using the Visit Japan Web, get a QR code for each person. Of course, you can always use a paper form at immigration, too.

  4. Gateway QR code form to enter Jordan - Jordan Forum

    www.tripadvisor.com/ShowTopic-g293985-i2131-k...

    Aristotlenova, that is good to know. My last flight to Jordan was last month and I had to show a QR code at check-in. Even though you did not need to show the QR code, the Jordanian government has your information by the fact you applied (it's possible they verified it with the airline before you showed up at the airport). Regardless, I still ...

  5. One-time pad - Wikipedia

    en.wikipedia.org/wiki/One-time_pad

    One-time pad. A format of one-time pad used by the U.S. National Security Agency, code named DIANA. The table on the right is an aid for converting between plaintext and ciphertext using the characters at left as the key. In cryptography, the one-time pad ( OTP) is an encryption technique that cannot be cracked, but requires the use of a single ...

  6. QR Code Entry Requirement - Jordan Forum - Tripadvisor

    www.tripadvisor.com/ShowTopic-g293985-i2131-k...

    Traveling instructions. - The PCR test should be done within maximum 72 hours prior to arrival. - The QR code registered on gateway2jordan platform has no expiration date, and can be used at any date as long as it was not refunded. - Arrivals at Queen Alia Airport are required to pay for the COVID-19 test through the following link: https ...

  7. JSON Web Token - Wikipedia

    en.wikipedia.org/wiki/JSON_Web_Token

    JSON Web Token. JSON Web Token ( JWT, suggested pronunciation / dʒɒt /, same as the word "jot" [ 1]) is a proposed Internet standard for creating data with optional signature and/or optional encryption whose payload holds JSON that asserts some number of claims. The tokens are signed either using a private secret or a public/private key .

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