I have tried to use mbarcode to decode the QR codes shown at http://www.qrcomic.com/. I traced the problem to the small size of the pictures used by mbarcode (400x240), which doesn't allow a large enough resolution to scan e.g., a 175x175 dots QR code. Is 400x240 a hardware limitation? Or would it be possible to use e.g. 800x480?

Besides, I'm eagerly waiting for python plugins!