Would love to have a Boolean variable that will indicate if Secure Input is on or not.
I could use it to have an "Advanced Condition" set so some of my Triggers won't conflict because secure input is interfering with BTT's ability to differentiate left and right CMD Key.
the most current versions already contain such a variable. While it is not a boolean, you can use it for the same effect, if the secure input pid is greater than 0 it means some app has activated secure input
v6.530 alpha (uploading) adds experimental support for differentiating left/right modifier keys in secure input mode (it's complex but I had planned it for quite a while). Let's see whether that works well.
However FN based keyboard shortcuts will (and probably won't ever) work with secure input active