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2. Near-field communication - Wikipedia

   en.wikipedia.org/wiki/Near-field_communication

   This chip is commonly found in smartphones and other NFC devices. Near-field communication (NFC) is a set of communication protocols that enables communication between two electronic devices over a distance of 4 centimetres (1.6 in) or less. [1] NFC offers a low-speed connection through a simple setup that can be used for the bootstrapping of ...

3. 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 ...

4. Square (financial services) - Wikipedia

   en.wikipedia.org/wiki/Square_(financial_services)

   4 million merchant clients. Launched. 2009; 15 years ago (2009) Current status. Active. Square is a financial services platform by Block, Inc. for small and medium-sized businesses. [1][2] It enables accepting credit card payments using smartphones as POS registers, and facilitates various business operations.

5. Five apps for business card scanning - AOL

   www.aol.com/news/2013-03-18-five-apps-for...

   Persistent critters, those little analog cardboard rectangles. Even with the option to scan QR Codes, email vCards or bump phones to swap contact information, the venerable business card keeps on ...

6. Contactless smart card - Wikipedia

   en.wikipedia.org/wiki/Contactless_smart_card

   Contactless smart card. A contactless smart card is a contactless credential whose dimensions are credit card size. Its embedded integrated circuits can store (and sometimes process) data and communicate with a terminal via NFC. Commonplace uses include transit tickets, bank cards and passports. There are two broad categories of contactless ...

7. How to make payments with your phone - AOL

   www.aol.com/finance/payments-phone-164336000.html

   First, add your credit and/or debit cards to Apple Pay. Open the Wallet app on your iPhone, tap the plus sign and follow the instructions to add a new card to Wallet. Once you’ve added the card ...