If the passphrase is strong enough (it should be) then it won't be easy to memorize, so a second passphrase backup makes sense.
SD card, USB drive, Password manager are all viable options, in the right hands of course.
What is your passphrase best practice?
Was asked about the following setup:
nostr:npub1s0vtkgej33n7ec4d7ycxmwt78up8hpfa30d0yfksrshq7t82mchqynpq6j Passport, uses encrypted backup with SDcard. Access code to unencrypt is in physical distributed location that would take significant time to travel. SDCard only is a risk as it can burn/break etc.
So the client uses a physical steel backup with 24 words, again a different location. On a different location holds the passphrase on steel.
How do you rate this setup? There’s redundancy in both the SD Card, Steel seed phrase and steel passphrase. Do you think a double backup for the passphrase is required?
Would love more input on best practices around this. nostr:npub15c88nc8d44gsp4658dnfu5fahswzzu8gaxm5lkuwjud068swdqfspxssvx nostr:npub17h7h2jzhq3hn06h93jvz67sfjxaq3jvk7kenjrazht28aun33hks42sd76
Discussion
You can memorize 6 words of a seed phrase and use that as password, in addition to redundant backups. That's good entropy