And can't be changed. Because they are, you know, attached to you. I lose a jump drive containing a key file? Easily change the keys on the server. The lost ke

And can't be changed. Because they are, you know, attached to you. I lose a jump drive containing a key file? Easily change the keys on the server. The lost key is no good to anyone anymore. My fingerprints get compromised? Uh... cut my own fingers off? Nope, they still have access. And now I have no fingers.