Activate Screen Saver when Button is pressed

[Extra 0]

Hello,

I’m using the MMM-SmartTouch Module(https://github.com/EbenKouao/MMM-SmartTouch) and I’m wondering if it’s possible to have the my screen go black/have the screen saver activate when I press the white square, and be able to click anywhere on my screen to have the screen display everything again.

Is there a way to do that?

Thanks in advance.

(I know that the white square does that, but I can still see it, since it’s not completely transparent. And if I make it completely transparent I forget where it is and I have to keep tapping different parts of my screen until I find it again.)