Off-topic: when you work with multiple monitors, wouldn't you like some sort of eye-tracking mechanism that could identify what window you're looking at, and im

Off-topic: when you work with multiple monitors, wouldn't you like some sort of eye-tracking mechanism that could identify what window you're looking at, and immediately shift the focus to that? I have several consoles open in different monitors and sometimes I accidentally run commands in some because the focus is in some other one :/