A barcode is an optical, machine readable representation of data; the data usually describes something about the object that carries the barcode.
Ref: https://en.wikipedia.org/wiki/Barcode
There are many online barcode generating utilities for creating different types of barcodes.
You can create Bar Code by using free online utility provided by http://barcode.tec-it.com/en
A barcode reader (or barcode scanner) is an electronic device that can read and output printed barcodes to a computer. Like a flatbed scanner, it consists of a light source, a lens and a light sensor translating optical impulses into electrical ones.
A QR code uses four standardised encoding modes (numeric, alphanumeric, byte/binary, and Kanji) to efficiently store data. It consists of black squares arranged in a square grid on a white background, which can be read by an imaging device such as a camera, and processed using QR reader software until the image can be appropriately interpreted. The required data are then extracted from patterns that are present in both horizontal and vertical components of the image.
Generally, a smartphone is used as a QR code scanner, displaying the code and converting it to some useful form (such as a standard URL for a website.QR codes storing addresses and URLs may appear in magazines, on signs,
on buses, on business cards, or on almost any object about which users
might want information. Users
equipped with the correct reader application can scan the image of the
QR code to display text, contact information, connect to a wireless network, or open a web page in the telephone's browser.
Ref: https://en.wikipedia.org/wiki/QRcode
You can create QR Code by using free online utility provided by http://qrcode.tec-it.com
Following is the QR code for visiting http://www.dnyandeep.com
Ref: https://en.wikipedia.org/wiki/Barcode
There are many online barcode generating utilities for creating different types of barcodes.
You can create Bar Code by using free online utility provided by http://barcode.tec-it.com/en
Ref: https://en.wikipedia.org/wiki/Barcode_reader
A QR code uses four standardised encoding modes (numeric, alphanumeric, byte/binary, and Kanji) to efficiently store data. It consists of black squares arranged in a square grid on a white background, which can be read by an imaging device such as a camera, and processed using QR reader software until the image can be appropriately interpreted. The required data are then extracted from patterns that are present in both horizontal and vertical components of the image.
Generally, a smartphone is used as a QR code scanner, displaying the code and converting it to some useful form (such as a standard URL for a website.QR codes storing addresses and URLs may appear in magazines, on signs,
on buses, on business cards, or on almost any object about which users
might want information. Users
equipped with the correct reader application can scan the image of the
QR code to display text, contact information, connect to a wireless network, or open a web page in the telephone's browser.Ref: https://en.wikipedia.org/wiki/QRcode
You can create QR Code by using free online utility provided by http://qrcode.tec-it.com
Following is the QR code for visiting http://www.dnyandeep.com
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