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Military grade steel, and I would not risk using a passphrase on a trezor or ledger.

Make sure the words are pre-programed on his signing device to avoid spelling mistakes.

ColdCard and steel ✅✅

So you’re saying yes - use steel - for the passphrase (and store separately) for someone who is new to this, but is a quick learner?

When you say pre-programmed do you mean the feature where, when you begin typing a word, it suggests a list of possibilities according to the first letter(s)?

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Discussion

DrDoggyballs 2y ago

I’d say steel for both. Diceware for the passphrase ideally. Probably will need to have two sets (one steel set under the control of your friend, but geographically distributed; steel bip39 with trusted party #1; steel passphrase with trusted party #2)

boston wine 2y ago

This is the definition of best practices 🤙🫡