We wont even fully certify iPhones for use with this solution because we have seen consistent failure to autofocus on the barcode for "some weird reason". iPads work like magic though. I have to go out of my way to not get a quick scan on recent generation iPad camera.

We went down the hardware scanning path w/ keyboard emulation in the browser, but its kind of clunky when you are considering the overall solution stack in a B2B setting.