Bip39 Standalone Html. From this level ahead the seed can be composed on paper or spoken more than phone which opened up new, Actual physical ways of backing up the seed (a number of paper copies in several places, tough copies on metallic plates with further protection from fire/flood and https://financemarker94837.wikijm.com/1101362/the_anatomy_of_a_bip39_phrase_entropy_terms_and_safety