Same but different... I was working to get a Hotel property management web application running on iPad so host could check in people away from desk. The web application supported MSR swipe keyboard entry, but you can’t plug in a generic USB MSR device into iPad. I wrote a custom iOS keyboard that interfaces with lightning MSR and its API and the “typed” the characters into Safari. It was nice to be able to use generic Safari and not some App wrapper. And it wasn’t too difficult on host to change keyboards to swipe.