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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. APEC Business Travel Card - Wikipedia

    en.wikipedia.org/wiki/APEC_Business_Travel_Card

    APEC Business Travel Card. The APEC Business Travel Card (ABTC) is a travel document issued to business travellers who are citizens of APEC participating economies. Valid for five years, the card eliminates the need for its holder to possess a visa when visiting other APEC participating economies as long as pre-clearance has been obtained ...

  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. 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 ...

  5. List of mobile virtual network operators in the United States ...

    en.wikipedia.org/wiki/List_of_mobile_virtual...

    Mobile virtual network operators (MVNOs) in the United States lease wireless telephone and data service from the three major cellular carriers in the country, AT&T Mobility, T-Mobile US, and Verizon. In 2016, MVNOs across the nation such as Metro PCS, Boost Mobile, Cricket Wireless, and Tracfone brands served about 36 million subscribers.

  6. Camera phone - Wikipedia

    en.wikipedia.org/wiki/Camera_phone

    The cameras of smartphones are used as input devices in numerous research projects and commercial applications. A commercially successful example is the use of QR codes attached to physical objects. QR codes can be sensed by the phone using its camera and provide an according link to related digital content, usually a URL.

  7. Best Virtual Credit Cards for 2023 - AOL

    www.aol.com/best-virtual-credit-cards-2023...

    2. Citi® Diamond Preferred® Card is a popular choice of credit card for all users. It offers attractive rewards and doubles up as a great virtual credit card. Users get to avail a 0% intro APR ...

  8. Unified Payments Interface - Wikipedia

    en.wikipedia.org/wiki/Unified_Payments_Interface

    Unified Payments Interface (UPI) Product type Instant inter-bank payment system Owner National Payments Corporation of India Produced by National Payments Corporation of India Country India Introduced 11 April 2016 ; 8 years ago (2016-04-11) Website www.upichalega.com Unified Payments Interface, commonly referred to as UPI, is an Indian instant payment system as well as protocol developed by ...

  9. Google Fi Wireless - Wikipedia

    en.wikipedia.org/wiki/Google_Fi_Wireless

    Google Fi Wireless (pronounced / faɪ / ), formerly Project Fi and Google Fi, is an American MVNO telecommunications service by Google that provides telephone calls, SMS, and mobile broadband using cellular networks and Wi-Fi. Google Fi uses the T-Mobile network. Google Fi is a service for US residents only, as of late 2023.

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