A simple one, but maybe helpful for strong passwords. So your employer wants you to change passwords every few weeks and they must be at least 6 digits, containing at least one letter, at least one digit and at least one special character like #@ etc. Moreover you could only use each pw once. After I ran out of family members I tried something else. I only needed to memorize a two digit number. 47 would get 47v$&b 86 would result in 86h*^g 34 gets 34e#$r So which password goes with 96 and which with 67? and why wouldn't I use 28?