keyboard on iOS : external or software detection

[Georges Malamoud]

I found a solution which may interest some of you, because I saw several messages about these keyboard problems on iOS
No easy way to detect a physical keyboard

I just focus on an unlocked visible field with a flag (I want to use a keyboard or not)
Then in the card script, I added on keyboardActivated 
if this is triggered, it means the software kb appeared (because it does not appear when there is a physical kb connected), so I focus on nothing, and no kb appears
Neat. Other solutions may be better.
Georges