QR Codes seemingly are becoming more commonplace in the world today. I, myself, am probably one of 3 people worldwide without a smartphone thus unable to use a QR reader. The convenient possibilities in QR codes seem endless as I've seen them on so many types of products I use daily. I've noticed they are made up of many unique patterns but my question is will it come to a point where there are no more QR codes because all of the patterns have been used up (see IPv4)?
closed as off topic by Mark Henderson♦ Jan 12 '12 at 7:14
Questions on Server Fault are expected to relate to professional server, networking, or related infrastructure administration within the scope defined by the community. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about reopening questions here.If this question can be reworded to fit the rules in the help center, please edit the question.
Obviously as the QR code is made of a matrix of fixed size dots, either black or white, there will be a total limit of variations.
However don't think of QR codes as IP addresses, think of them more like encoded URL's - certain combinations of dots may be no use to anyone. Current QR codes can store up to 1852 chars.
However if you look at the wikipedia article http://en.wikipedia.org/wiki/QR_code - there have been various versions of QR codes, it wouldn't surprise me if at some point a newer standard superceeds current QR codes with either a bigger matrix of dots, smaller dots or both.
Why would it matter if the code you wanted to use was used by someone else for some other purpose or not? You create the QR code that does what you need to do, it doesn't matter whether or not someone else has used that same QR code for some other purpose or not.
If I want to bring you to serverfault, I give you this link
In some alternate universe,