> Did someone else steal your brain and you need to make sure they no longer have access?
Password databases get compromised all the time; so would a "brainprint" database. You can change a password.
Password databases get compromised all the time; so would a "brainprint" database. You can change a password.
It only takes one place where security standards aren't implemented properly to have your print leaked forever.
Never mind a malicious user managing to alter the code to leak the print before it's hashed.
Or even someone physically accosting you and retrieving a brain scan. They could do the same thing and force you to give up a password, but at least the password you can change later on.
For that matter, a password is always your choice to reveal or not, taking the cost and alternative into account. Biometric information isn't.