I'm quite new with this QR code thing and I haven't tried to generate QR code as individual private keys but heard of it true. I got this link on Bitcoin for you, check if it is helpful:
https://en.bitcoin.it/wiki/How_to_import_private_keys

does the camera not focus on the qr code? If the autofocus works normally in camera mode but doesn't with bar code scanner applications that really sounds as though the developers may need to update their applications for the M.  I don't know that to be the case, it might be a good idea to contact one of the developers, You might try "ShopSavvy" on the Play Store for free.  I've used it for a very long time on every Motorola Android phone that I've owned and never had a problem with that particular app