QR Code advantages and disadvantages

QR Codes advantages and disadvantages

What is a QR code

A QR code is a two dimensional bar code / matrix code. Doesn’t look like a conventional bar code one would see on the side of a cereal box or on the reverse of a book.

QR stands for quick response and was created by a Japanese corporation Denso-Wave in 1994. The term QR Code itself is a registered trademark of Denso Wave Incorporated. QR codes are very common and are the more popular of 2d codes in Japan. Organisations in Japan actually have huge QR codes displayed on the outside of their buildings.

QR Code is an open format. The format's specification is available royalty-free. The owner has promised not to exert patent rights on it.

What is Hardlink or Hardlinking?

When a QR code is scanned and is translated to reveal a URL; the mobile phone will the open that URL using its browser, this act is know as a hardlink.

Storage

QR Code data capacity

Numeric only Max. 7,089 characters

Alphanumeric Max. 4,296 characters

Binary (8 bits) Max. 2,953 bytes

Kanji/Kana Max. 1,817 characters

Error correction capacity

Level L 7% of codewords can be restored.

Level M 15% of codewords can be restored.

Level Q 25% of codewords can be restored.

Level H 30% of codewords can be restored.

Advantage of QR codes

There is no need to write vital details down. A simple scan captures the desired information.

QR Codes can be used to store addresses and URLs that can appear in magazines, on signs, buses, business cards or just about any product that users might need information about.

Disadvantages of QR codes

Users must be equipped with a camera phone and the correct reader software that can scan the image of the QR Code. Currently only Smartphone’s are technically equipped to do this. Many users that have mobile phones that have cameras are unable to get QR reading software for their phones.

Comments (6)

Hello,

we believe that QR codes will make the connection between offline and online worlds easier. That’s why we created our QR code generator with social features – YouScan.me - http://www.youscan.me. You can add all your info like Facebook profile or fan page, twitter, youtube, etc. and connect with others.

Cheers

YouScan.me | 07/03/2011 11:10:00

QR codes seem to be a technology that will be driven by the tech savvy younger generation. Whoever starts using QR codes to market to teens and twenty something will have a huge market that will most likely really embrace the technology.
Bill | 16/03/2011 05:24:00

There is no doubt that QR code usage is growing! You can even incorporate your logo and pictures into the QR Code which is really cool. Check out how we are using QR Codes http://www.prontomm.com. Andy Lynn

Andy Lynn | 17/03/2011 02:59:00

Use of QR code is growing day by day. Tech savvy people are using it to reduce their paper work. But the main drawback is non-availability of net connection and also the limited data storage capacity. It is accepted by people because of its advantages like no set up cost, no programming knowledge required, require no server space, etc.
Mobile application development | 29/03/2011 10:27:00

Qr code is really new revolution of the new century
Qr Code | 19/07/2011 04:47:00

Recently I came across a really neat QR code that allows you to link it to 4 different urls as well as lets you change those links.

If you've used a QR code before and then wanted to change the link it went to, you would have to create a whole new QR code which wouldn't always be feasible if you've already had that code printed on marketing materials, business cards, signs, etc.

Well, with this new QR code, that is no longer a problem - best.qr.gl
Julie Larson | 08/10/2011 18:32:00

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