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2. What you need to know about QR code scams and how to ... - AOL

   www.aol.com/know-qr-code-scams-stay-204500807.html

   Fake QR codes can look just like legitimate ones, so watch for any irregularities before you scan. If you notice that a menu or poster includes a QR code with bumps, peeled edges, or that appears ...

3. 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 ...

4. 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 ...

5. Barcode - Wikipedia

   en.wikipedia.org/wiki/Barcode

   Messenger Codes: Proprietary ring-shaped code for Facebook Messenger. Defunct as of 2019, replaced by standard QR codes. Micro QR code: Micro QR code is a smaller version of the QR code standard for applications where symbol size is limited. Micro PDF417: MicroPDF417 is a restricted size barcode, similar to PDF417, which is used to add ...

6. Windows Live Barcode - Wikipedia

   en.wikipedia.org/wiki/Windows_Live_Barcode

   Windows Live Barcode (codenamed Confucius) was a part of Microsoft 's Windows Live services. It allowed users to transfer information between various media (PCs, billboards, magazines etc.) and handsets via Quick Response Code ( QR Code ), a two-dimensional matrix barcode. It provided a method for people to exchange information and use various ...

7. Barcode reader - Wikipedia

   en.wikipedia.org/wiki/Barcode_reader

   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 ...