> Why would you want to memorise a password?
You'll definitely want to memorize the password to the backup service that has the last copy of your password vault after a disaster. :P
> Writing your passwords down on paper is actually less crazy than it sounds
I agree that physical security can be incredibly useful against a lot of modern threats... but we can do better. I wish there was a dedicated password-keeper device format of:
* A small keyboard and screen
* The data encrypted at rest by one master password
* Only permits upload/download of the the encrypted file over USB. With some companion software, you just plug it into your computer, computer copies the encrypted file to somewhere on disk that gets regularly backed up, the disconnects and beeps to tell you it's done.
* Sturdy enough that any "Evil Maid" attack needs to be done by a professional rather than a conniving roommate or jilted partner.
* Tracks history of entries, last-changed, etc.