Interesting@orac, thank you for the link... we were discussing a similar solution in our Telegram group a few days ago (mnemonic words on metal rings), people are thinking hard on security.
That was myself who made the mnemonic words on metal rings suggestion. But thinking about it, I think it would be a bit of a pain to engrave the metal yourself. However, I still find the idea of wearing the mnemonic words on some kind of accessory attractive. We need to give this more thought.
Very nice! Good to see such a good idea continuing to germinate, hope it bares good fruits... thank you for adding it to the discussion here in PowPing as well@orac