Oh yeah I had the app, it seems that I've managed to get a few QR codes to read (not yours though), and I still haven't got it to read any barcodes. I think it might just be that the lens isn't that great I suppose.
I have found that the 845 has trouble with focusing on close objects. To get it to read QR code on the web, i had to magnify the page (Control + in firefox).



