Keyboard and scanner

I designed a FM Go app that uses a bluetooth scanner (Socket CHS 7). I can't find the way to control the active keyboard (scanner or ios). I tried the "Enable touch keyboard" script step but if I hide the keyboard, I loose the focus on the field that must get the scanned code, so it's like having no keyboard. That seems to be the problem: https://community.filemaker.com/thread/136708 a bug not fixed yet?

So far the only way to hide the ios keyboard without loosing field focus is to turn off the ios keyboard is from the scanner itself, clicking twice the power button. Once the active keyboard is the scanner, I still have the edit bar that shows on the top of the ios keyboard covering the bottom of my FM Go app:

Do you know if there's a way to hide this bar?

Edited April 8, 20187 yr by naio
I've found a little more about it