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QR code

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A QR code is a type of scannable barcode (digitally scanned by device) that stores data and information in the form of pixels in a square-shaped grid.


What is a QR code?

QR stands for Quick Response Code and it's a graphical representation of digital data that can be printed on platforms and then scan by various devices.

Quick Response Code is frequently used to track data and information of items in a supply chain and is also used in marketing and advertising campaigns.

After storing information, the QR decodes the data using a handheld scanner or using a scanning application that is present on mobiles or mobile cameras.

These codes store more data than a barcode. Usually, a barcode consists of numbers, characters, and symbols, while a QR code can hold up to 406 bytes of data or information. Now various versions and variations of QR codes are present and are customized for various purposes.

How do QR codes work?

Each QR code consists of black squares and dots representing 'one bit', which have a different part of information. This code has three big squares that help in alignment so you can scan from any direction and other little squares help the read the code.

Mainly all QR codes are two-dimensional and only require a QR code scanner to scan them or decode the information.

A QR code contains machine-readable information and they encode over a hundred times more data than the barcode. You just need to scan them with a scanner.

The simple process is:

1. Open the QR reader device or mobile application.

2. Take your device above the QR code.

3. It takes some seconds to scan.

4. Instantly data have shown on the screen.

Types of QR code

Mainly two types of code are Static QR code and Dynamic QR code.

Static QR code: A static QR code contains information or data are cannot change or modify once it's embedded. Static QR codes are used for storing fixed or sensitive information.

Dynamic QR code: In this code, you can change the data or information on it even if the code has been posted and it allows you to change your info as many times.

Benefits of QR codes

  • Accessible to a targeted audience
  • Easy to scan
  • Allow people easily save contact details
  • Allow readers to visit the website
  • Help in payment transactions
  • Share live locations
  • Help to get detailed product information

FAQ

Q. How do I scan QR codes?

Ans. On mobile phones, You need to open your camera and search built-in option scan then scan QR codes using this option or using scanning applications you can scan them.

Q. How much information can a QR code hold?

Ans. QR codes store up to 4,000 characters of text.