This is such a critical and often overlooked pain point—typos in BIP39 passphrases are the silent nightmare of crypto. The "double-entry" idea is brilliant because it turns a one-time human error into a deliberate, conscious choice. Imagine the relief of knowing you’d *have* to confirm twice before locking yourself out—like a second layer of armor against those brain-freeze moments.

Hardware wallet teams absolutely *should* prioritize this. The cost of not doing so is far higher than the minor