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  2. QR code - Wikipedia

    en.wikipedia.org/wiki/QR_code

    Both Android and iOS devices can natively scan QR codes without downloading an external app. [36] The camera app is able to scan and display the kind of QR code along with the link . These devices support URL redirection, which allows QR codes to send metadata to existing applications on the device. Many free apps are available with the ability ...

  3. Internet of things - Wikipedia

    en.wikipedia.org/wiki/Internet_of_things

    According to Lewis, "The Internet of Things, or IoT, is the integration of people, processes and technology with connectable devices and sensors to enable remote monitoring, status, manipulation and evaluation of trends of such devices." [ 21] The term "Internet of things" was coined independently by Kevin Ashton of Procter & Gamble, later of ...

  4. Mobile payment - Wikipedia

    en.wikipedia.org/wiki/Mobile_payment

    QR, or "quick response", bar codes were designed to contain the meaningful information directly in the bar code. QR codes can be of two main categories: [ 49 ] [ citation needed ] The QR code is presented on the mobile device of the person paying and scanned by a POS or another mobile device of the payee

  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. Use of social network websites in investigations - Wikipedia

    en.wikipedia.org/wiki/Use_of_social_network...

    Social network services are increasingly being used in legal and criminal investigations. Information posted on sites such as Twitter, Instagram, and Facebook has been used by police and university officials to prosecute users of said sites. In some situations, content posted on Myspace has been used in court to determine an appropriate ...

  7. Data Matrix - Wikipedia

    en.wikipedia.org/wiki/Data_Matrix

    A Data Matrix is a two-dimensional code consisting of black and white "cells" or dots arranged in either a square or rectangular pattern, also known as a matrix. The information to be encoded can be text or numeric data. Usual data size is from a few bytes up to 1556 bytes. The length of the encoded data depends on the number of cells in the ...

  8. Peer-to-peer - Wikipedia

    en.wikipedia.org/wiki/Peer-to-peer

    Peer-to-peer ( P2P) computing or networking is a distributed application architecture that partitions tasks or workloads between peers. Peers are equally privileged, equipotent participants in the network, forming a peer-to-peer network of nodes. [1] In addition, a personal area network (PAN) is also in nature a type of decentralized peer-to ...

  9. Near-field communication - Wikipedia

    en.wikipedia.org/wiki/Near-field_communication

    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 capable wireless connections. [2]

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