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2. vCard - Wikipedia

   en.wikipedia.org/wiki/VCard

   Standard. RFC 6350. 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. They can contain name and address information, phone numbers, e ...

3. Business card - Wikipedia

   en.wikipedia.org/wiki/Business_card

   A business card typically includes the giver's name, company or business affiliation (usually with a logo) and contact information such as street addresses, telephone number (s), fax number, e-mail addresses and website. Before the advent of electronic communication, business cards also included telex details. [3]

4. 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. [6] [7] [8] 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; [9] the pattern of position detection was found and determined by applying the least-used ratio (1:1:3 ...

5. Trade card - Wikipedia

   en.wikipedia.org/wiki/Trade_card

   A trade card is a small card, similar to a visiting card, formerly distributed to advertise businesses. Larger than modern business cards, they could be rectangular or square, and often featured maps useful for locating a business in the days before house numbering. They first became popular at the end of the 17th century in Paris, Lyon and London.

6. Barcode - Wikipedia

   en.wikipedia.org/wiki/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 readers, of which ...

7. Digital card - Wikipedia

   en.wikipedia.org/wiki/Digital_card

   The term digital card[1] can refer to a physical item, such as a memory card on a camera, [2][3] or, increasingly since 2017, to the digital content hosted as a virtual card or cloud card, as a digital virtual representation of a physical card. They share a common purpose: identity management, credit card, debit card or driver's license.