Thứ Tư, 4 tháng 3, 2020

What's a QR Code? How do I generate qr code?

Today, QR codes have been used popularly ... QR codes are now not only used in the automobile industry but also more widely used ... and encode more information than UPC codes.So what is QRcode?

QR code according wiki (abbreviated from -Quick Response code-) is the trademark for a type of matrix barcode (or two-dimensional barcode) first designed in 1994 for the automotive industry in Japan. A barcode is a machine-readable optical label that contains information about the item to which it is attached. In practice, QR codes often contain data for a locator, identifier, or tracker that points to a website or application. A QR code uses four standardized encoding modes (numeric, alphanumeric, byte/binary, and kanji) to store data efficiently; extensions may also be used.
sample of qr code

How is a QR Code structured?

A QR code has always an image of a square. The main element of the code is its matrix. Its elaborate pattern, consisting from black squares and lines, called modules, contains different information. According to the amount of information that should be encoded to the image the number of modules can vary.

If a QR Code is damaged what happen?

It can be read even if part of the code is damaged. (up to 30% of the Code structure)

What can be stored in a QR Code?

It can store a large volume of data (Up to 7089 digits or 4296 characters), including punctuation marks and special characters, can be entered in one Code. In addition to numbers and characters, words and phrases (e.g. Internet addresses) can be encoded as well. As more data is added to the QR Code, the Code size increases and the Code structure becomes more complex.

How to create a qr code online

There are many way to create a QR code online and many softwares allow to use free as or etc...They have many type of qr codes for you. Simply click on "Create QR Code", and your personal QR Code is ready. Now you just decide, in which image format you want to use the Code and download the file easily
Let's learn about the qr code types supported in this great toolkit through the following articles. The first is vcard qr code or business card qr code

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