We have an app that isn't finding (or really struggling to find) QR Codes one so far these confirmed devices:
Nexus 7 tablet 2013
Basically it rarely finds the code unless it is a long way from the device so that it occupies a very small part of screen real estate.
It appears that it might be something to do with the viewfinder and I've read that this is by design but it seems primarily functional design not usability-centered design! Our app has a custom overlay with a custom 'scope' that scales with the screen size. It's far prettier to scale it instead of having this really tiny screen in the very center. Besides we have other UI elements directly related to the size of the scope which should not be that tiny if the device is large!
Any help greatly appreciated! Struggling here...