At first I was angry when I had to switch to HID barcode readers because I couldn't get an app to do it well, but in the end I was very happy I did it because the ergonomics of a barcode reader are so much better than with a phone or webcam. Not just the mounting options available but also the projected red laser making things reflex-easy.

Has that been a part of your project yet? I ask because I can't easily imagine any situation where the workers would be more efficient or happier using a phone/webcam/etc to do the scannings