Write a sentence you are likely to remember. Make sure it has letters and numbers. A proper noun or two would help. The sentence should have as many words as the maximum password length.
Step 2:
Arrange the words from the sentence top to bottom. A grid will help organize the letters. Any letters on the same row as a capital should be capitalized.
Step 3:
Pick your passwords vertically. IE, for the first password, take the first letter of each word and number of each date. Do this until you run out of suitable passwords. A good password sentence will yield 3 or more good passwords. This should be all you really need.
Goal:
Your ultimate goal is to memorize your password sentence so that you have it down pat. By memorizing words, you're spending the same amount of effort as memorizing a single set of letters, but in a more natural form that you can use for a lot more passwords.
Example:
Let's say my password needs to be between 6 and 12 characters long, have at least 2 of the following: lower case letters, upper case letters, numbers, and punctuation.
I'll create my sentence:
I
started
Ragnarok
with
my
friends
Sarah
and
Bobby
on
6 4 2011
And collect my passwords:
pw1:
IsRwmfSaBo6 - an 11 character password with 4 caps and a number
pw2:
tAiyrAnOn4 - a 10 character password with 3 caps and a number
pw3:
aGtiRdB2 - an 8 character password with 3 caps and a number
pw4:
rNheAB0 - a 7 character password with 3 caps and a number
pw5:
tAnHY1 - a 6 character password with 3 caps and a number.
5 passwords is a good haul. It should keep me Ragnaroking for a year or more under the current password change requirements. All I have to do is memorize a simple sentence: "I started Ragnarok with my friends Sarah and Bobby on 6 4 2011"
btw...this example has never been one of my passwords.
Edited by Ceer, 24 February 2011 - 11:58 PM.