what about using something like this https://www.passwordcard.org/en https://www.passwordcard.org/en and a sequence like up, down, down, up (memorizing the coll

what about using something like this https://www.passwordcard.org/en https://www.passwordcard.org/en and a sequence like up, down, down, up (memorizing the collumns and rows too). and using separate cards for different keystores.