What are QR Codes?

This is a traditional barcode.


This is a QR Code.


Using currently available cellphones and free downloaded software equipped with cameras, the user simply takes a photo of the QR code, and the phone reads the information in a matter of seconds. The information can be a web address, a phone number, text, or a SMS message.

“Today QR Codes are so pervasive in Japan that it’s almost impossible without seeing one. You can find them in advertisements, mobile campaigns, on maps, in magazines, on billboards etc. and nobody wants to miss them anymore.

In that sense the QR Code revolution is comparable to SMS. It’s an easy and simple tool, the cost of the connection to a mobile site is below the price of an SMS and it’s up to you to decide whether or not you want to scan it.”

“In comparison with other Barcodes, QR Codes combine several advantages:

  1. They can hold a very large capacity of numbers or letters in any language.
  2. Their printout size can be very small.
  3. They offer high speed reading .
  4. They can be read from any side (omnidirectional or 360° scan).”

(via http://reader.kaywa.com/)

While conventional bar codes are capable of storing a maximum of approximately 20 digits, QR Code is capable of handling several dozen to several hundred times more information.

QR Code is capable of handling all types of data, such as numeric and alphabet characters, symbols, binary, and control codes. Up to 7,089 numeric characters can be encoded in one symbol, and 4296 alpha numeric.

Anyone can currently create a working QR code for non commercial purposes for free at http://qrcode.kaywa.com/ or http://www.lunaqr.com/Generate.aspx


One Response

  1. There is also a complete overview of how QR Codes work at http://www.qrme.co.uk/qr-codes-explained.html. The site also has news, videos and a QR Code forum.


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