There are a couple of things that I'd like to change, but wanted to check with lardman or dragly first:
* Since we're automatically focusing now, can we simply remove the focus button? It becomes enabled/disabled constantly, and is distracting.
* Several times now I've started to scan without remembering to open the lens cover. Besides being confusing, this makes the LEDs shine right against the cover, which can't be good for the phone. Could I change mbarcode to detect if the cover is closed? I'd lock the camera open (so the native camera app can't start), but display a message and not turn on the flash until the covers opened.