I want a key command

computer
I want a key command for all computers, all operating systems, which…, with a 3 finger key-command or gesture, allows me to open a specific app, use it and close it again with that same gesture.

I want a key command, for all computers & all operating systems. Which- with, a 3 finger key-command or a 3 finger gesture, allows me to open any app, use it and close it again with that same gesture.

Can that be designed?

I also want contextualized right-click in browsers.