QR Codes – Know them – Create them!

Posted by Sujit Agarwal | Posted in IT Industry, Web | Posted on 07-02-2012

Have you seen these bar codes? The zig saw puzzle types squares, which make no sense. Where? In newspaper, on Facebook, Television, Cell phone, Blackberry Advertisement? 😛 But guys they mean a lot. You can’t decode them. They contain lots of encrypted data.

Well now discover what these are and how are these created?

These are modern barcodes called the QR codes or Quick Response codes.

QR (i.e. Quick Response) codes are two-dimensional barcodes that encode digital data. The barcodes can encode website addresses, twitter links, and other information from everything which is online. This is an efficient way to go online from the offline mode.

QR code was created by Toyota and was first introduced in the automotive industry in 1997. Now with the advancement of technology and intervention of NFC and RFID systems into are daily lives, QR codes are soon going to be an unique identity each one would have. This is an unique trade mark to make information flow very easy among the online resources.

You just have to focus your Smartphone camera on the QR and you would be redirected to the destination embedded, mostly a hyperlink (provided your phone has the QR code reader). It contains data like music, links to videos, phone numbers, etc. Have you seen the Blackberry add? I think now you can relate why the girl rotates that QR code which she was wearing in her right hand; because that was stored with her contact. 😛

The traditional way this was presented was in black and white squares arranged like molecules, all congested and over lapping.

QR code is created on the basis of the following:

  • Numeric only Max. 7,089 characters (0, 1, 2, 3, 4, 5, 6, 7, 8, 9)
  • Alphanumeric Max. 4,296 characters (0–9, A–Z [upper-case only], space, $, %, *, +, -, ., /, :)
  • Binary/byte Max. 2,953 characters (8-bit bytes)
  • Kanji/Kana Max. 1,817 characters

The higher the number of character in the data, the densier the molecules of the QR code become.

Want to Create one?

Click on any of the codes for the type of QR you want Colorful one? or Black and White one? 😛 Mentioned sideways are Fourdy Wlog’s QR code.

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