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2. vCard - Wikipedia

   en.wikipedia.org/wiki/VCard

   vCard. vCard, also known as VCF (Virtual Contact File), is a file format standard for electronic business cards. vCards can be attached to e-mail messages, sent via Multimedia Messaging Service (MMS), on the World Wide Web, instant messaging, NFC or through QR code.

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. 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 ...

4. Business card - Wikipedia

   en.wikipedia.org/wiki/Business_card

   A Oscar Friedheim card cutting and scoring machine from 1889, capable of producing up to 100,000 visiting and business cards a day. Business cards are cards bearing business information about a company or individual. [1] [2] They are shared during formal introductions as a convenience and a memory aid.

5. 10 Easy Ways to Use QR Codes to Market Your Business - AOL

   www.aol.com/2011/06/16/10-easy-ways-to-use-qr...

   Have you ever heard of a QR code or Microsoft Tag? If those terms sound like a foreign language, you're not alone. While major brands like Kraft Foods, Procter & Gamble and Macy's have embraced ...

6. Barcode - Wikipedia

   en.wikipedia.org/wiki/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 barcode ...

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 ...