just got some errors runnign ZBar with my iOS App.
I included the newest Beta Version 1.3.1 in my Project and am Running the App locally on my iOS7 Device (iPhone 5)
Try only armv7, armv7s for "Architectures" build settings. I think static library doesn't have arm64 binaries included.
For more info
Xcode 5 and iOS 7: Architecture and Valid architectures