Bip39 Seed. Have the demanded number of COLDCARDs, decide on Import Current throughout setup and load precisely the same backup file onto Just about every of them. Give Every COLDCARD its very own passphrase then lock down the seed. Your seed words won't be known to any on the products https://bookmark-media.com/story19633620/bip39-passphrase-https-linktr-ee-bip39-not-known-factual-statements-about-bip39-list