"Barcode iPhone App available in App Store July 23rd, 2008 by Stefan Hafeneger
After several attempts my iPhone Barcode App is finally available in the App Store."
But when I looked back then , I never found it.
Now he says:
"iPhone Barcode App v0.3 July 30th, 2008 by Stefan Hafeneger
I uploaded the new version of the iPhone Barcode App yesterday. It’s currently in review."
And
"Barcode App now featuring QR Code July 28th, 2008 by Stefan Hafeneger
As I announced last week, the iPhone barcode app now decodes QR Codes as well. I also added some more features that most of you requested. Mario is currently doing the graphics for the new user interface which should be ready tomorrow. I will then do a private beta with some friends and if there are no serious bugs, I will upload the new version to the App Store tomorrow evening."
So, it's hard to say.
This link gets you to 'comments' and scrolling up gets you to a lot of screen shots of the iPhone using his app.