Using virtual keyboard and physical bluetooth keyboard simultaneously

I notice there are a lot of unanswered threads about this, but in regards to bluetooth scanners specifically.

When a bluetooth keyboard is linked to an iPhone and being used, the virtual keyboard is hidden. How can I disable this behaviour?

My ios app requires access to the soft keyboard and physical bluetooth keyboard simultaniously as functions need to be triggered remotely. However when the bluetooth keyboard is connected or used the vitual keyboard hides.

Some keyboards have a shortcut for bringing the keyboard back up, but this isn't a solution for me sadly- I need to find a way to prevent the keyboard from hiding at all.

With the number of threads about this already, someone must have found a solution?