Perfect Add-on - perfect support! Rated 5 out of 5 stars
I correct my rating from 4 to 5 stars!
Less than a month ago I tested this Add-on and mentioned missing size adjustment and too thin border. With 0.2.0 both has been fixed. Now size is configurable (with optimal default for my phone :-) and what's new: code type can be chosen between "QR Code" and "Data Matrix".
Works perfect even with my 2 MPixel fix-focus phone camera.
Watch this space
Glad you find it useful. I hope you'll find one of the updates in version 0.1.5 helpful, I've added a border around the barcode. I'm still working on the options to adjust the size of the code.
I'd also suggest you try UpCode (upcode.fi) app too, that seems to work fantastically on my phone.