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  2. QR code - Wikipedia

    en.wikipedia.org/wiki/QR_code

    In Russia, a malicious QR code caused phones that scanned it to send premium texts at a fee of $6 each. [102] QR codes have also been linked to scams in which stickers are placed on parking meters, posing as quick payment options, as seen in Austin, San Antonio and Boston, among other cities across the United States and Australia. [113] [114] [115]

  3. Mobile tagging - Wikipedia

    en.wikipedia.org/wiki/Mobile_tagging

    Mobile tagging. Mobile tagging is the process of providing data read from tags for display on mobile devices, commonly encoded in a two-dimensional barcode, using the camera of a camera phone as the reader device. The contents of the tag code is usually a URL for information addressed and accessible through Internet. the mobile tagging process.

  4. Camera phone - Wikipedia

    en.wikipedia.org/wiki/Camera_phone

    QR codes can be sensed by the phone using its camera and provide an according link to related digital content, usually a URL. Another approach is using camera images to recognize objects . Content-based image analysis is used to recognize physical objects such as advertisement posters [ 144 ] to provide information about the object.

  5. Add or disable 2-step verification for extra security - AOL Help

    help.aol.com/articles/2-step-verification...

    1-800-358-4860. Get live expert help with your AOL needs—from email and passwords, technical questions, mobile email and more. Add or disable 2-step verification for extra security. Add an extra security step to sign into your account with 2-step verification. Find out how to turn on 2-step verification and receive a verification code, and ...

  6. Mobile payment - Wikipedia

    en.wikipedia.org/wiki/Mobile_payment

    QR code is a square two-dimensional bar code. QR codes have been in use since 1994. [48] Originally used to track products in warehouses, QR codes were designed to replace the older one-dimensional bar codes. The older bar codes just represent numbers, which can be looked up in a database and translated into something meaningful.

  7. 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 ...

  8. Phone Link - Wikipedia

    en.wikipedia.org/wiki/Phone_Link

    It is a native component of Windows 10 (since version 1809) and Windows 11, where it is a UWP app and consists of a driver that communicates with the Link to Windows [3] app on the mobile device. Phone Link makes use of Wi-Fi , Bluetooth for voice calls, or mobile data ; [ 3 ] it syncs via Microsoft servers, meaning that an internet connection ...

  9. 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 ...

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