I have an encrypted file of my passwords, encrypted with a password of over a dozen characters, containing uppercase and lowercase letters, as well as numbers. It has no meaning whatsoever, and I have no trouble remembering it. The author thinks no one can remember SIX random characters?? How many phone numbers do you know? Zip codes? Addresses? URLs? Email addresses? Really, I think ANYONE can remember 6 random characters, especially if they type them all the time.