It would be good if you wanted to have a system that two people need to be present to unlock. Like those nuke launch locks that need two keys.
You can also just split the password for a single LUKS into two parts and give one each to the two people :D
Yeah, you’re right. That’s better.
But then you know both parts of the password and so must be killed to keep the machine secure
Ideally you would never have to because you just have the two people come up with their part of the password and then initialise the LUKS partition together. Sorta like a key ceremony
I don’t think that’s how its done. I see where your going with this.