The book, PassKey.Me: Securing Your Digital Identity, (available at Aamzon.com) uses a memory system to remember Credentials.
The system has three parts:
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-1- The Password is based on abstracting portion of the domain where the login occurs.
To login into Facebook, the first letter off the domain is choosen: F.
The last letter K is the first letter in an alphabetical list of 1960’s pop bands: Kinks.
His password is fkinks
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-2- The Keyword is a set of random characters select by chance using techniques in the book.
For example: eieio
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–3- The Meword is a set of rules for capitalization, and special characters and numbers.
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And so, the Facebook Credentials are F|Kinks|EIEIO|99
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This a simplistic example for ease of presentation, but system can add increased security.