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QR Code Generator s: Will all qr code readers read all codes generated by qr code generators

posted Wednesday, 22 October 2008

I've been noting an interesting observation in the last few times that I have used QR codes in presentations is that some readers don't seem to be able to access the qr codes that I have generated. This was a surprise because I assumed that the QR code generators followed the QR Code - ISO standard (see http://en.wikipedia.org/wiki/QR_Code). Therefore, you could create a code in one generator and it would be accessible by all readers.

Therefore, in an attempt to unpick this I was wondering, if people have a QR code reader on their mobile device, could they download the QR Codes on the following word document (http://www.bath.ac.uk/lmf/download/23922 ). After they have tried to access them, could they please email me your findings (a.ramsden@bath.ac.uk). I'll write up the findings in a couple of weeks and share them.

Thanks :-) 

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1. Moira Sarsfield left...
Saturday, 25 October 2008 11:01 am :: http://msars.edublogs.org/

I was able to read all the QR codes with a webcam and both Quickmark and bcWebCam software. Codes 5, 6, and 9 (the biggest/most complex codes) were the most difficult to capture.

See http://chart.apis.google.com/ for useful info on error correction, levels, etc. For example it states "The best QR code readers will be able to read version 40 codes, mobile devices may read only up to version 4."


2. Mia left...
Sunday, 26 October 2008 6:27 pm :: http://openobjects.blogspot.com

My N95 (8gb model) was able to read them all and display the correct text or link with the built-in Barcode software.


3. Jesse left...
Saturday, 29 November 2008 4:36 am :: http://mskynet.com/static/maestro

Great Question. Some friends and I have been working on a QR Code generator and API and we have investigated literally dozens of readers and tried to find all the possible encoding methods. By and large, the issue is not the QR Code standard, but it is a problem with the encoding standard (data embedded in the qr code that represents the action if scanned).

In our investigations there does seem to be a non-documented encoding standard where everyone is copying from each other and hence the divergence. We have tried to make an implementation that is as compatible with as many readers as we can find and we have tested this on many types of platforms (windows mobile readers, iphone readers, and android zxing). We are open to suggestions so please try it out and let us know if you have any questions or suggestions. MSKYNET QRCode Generator: http://mskynet.com/static/maestro


4. John left...
Wednesday, 25 February 2009 3:38 pm

I been using http://www.beqrious.com to generate codes, I like this site :) you can save the codes in a PDF format which helps me out!