On 7 February 2012 09:45, Tom Morris <tom@tommorris.org> wrote:

I've been playing around making barnstars. And I think I've made a
particularly good one of interest to all of you QR-hungry Wikipedians.

https://commons.wikimedia.org/wiki/File:Barnstar-QR.png

It's a barnstar to celebrate particularly clever uses of QR codes. The
QR code in the barnstar is for the article on QR codes. It uses
QRpedia links, so you can go read the most appropriate version of the
article for you.

Only it's got a hole in the middle. Because, duh, it's a barnstar.
Thanks to QR codes error correction capabilities, my Android phone is
able to read the QR code even missing a chunk in the middle (it uses H
level error correction, which means that 30% of the QR code can be
removed and it still can work*).

It still works, even though the rest of the barnstar is noisy with
repeated QR-like noise. And there's some background barnstar imagery
behind the QR code.

If you've read, say, Terence Eden's blog posts about making good QR
codes, this one breaks almost all the rules. It's a barnstar first and
a usable QR code second. But it's a usable QR code... just about.

* The error correction is what lets the BBC create a QR code with
their logo in the middle -
http://2d-code.co.uk/images/bbc-logo-in-qr-code.gif

--
Tom Morris
<http://tommorris.org/>

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