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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. 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. How QR codes work and what makes them dangerous – a ... | AOL

   www.aol.com/news/qr-codes-makes-them-dangerous...

   QR codes have a wide range of uses that help people avoid contact with objects and close interactions with other people, including for sharing restaurant menus, email list sign-ups, car and home ...

5. QR code payment - Wikipedia

   en.wikipedia.org/wiki/QR_code_payment

   A QR code payment is a mobile payment method where payment is performed by scanning a QR code from a mobile app. [1] This is an alternative to doing electronic funds transfer at point of sale using a payment terminal. [2] This avoids a lot of the infrastructure traditionally associated with electronic payments such as payment cards, payment ...

6. Cybercriminals are altering QR codes — How to avoid ... | AOL

   www.aol.com/finance/cybercriminals-altering-qr...

   QR code at the entrance to a Chick-fil-A in Phillipsburg, N.J.,invites people to apply for work at the restaurant. On Tuesday, June 5, the Labor Department reports on job openings and labor ...

7. QR Codes Are Reshaping Public Transit, But Are They Safe? | AOL

   www.aol.com/qr-codes-reshaping-public-transit...

   In most cases, those QR codes still connect to some form of data to make them work, so even when boarding public transit, a user might be giving the transit agency that data. Sarah Kaufman from ...