Metamask-extension: Allow importing BIP39 mnemonics as accounts

[leafcutterant]

Let "Import account" accept BIP39 mnemonic seeds. Right now, using another seed is possible only by logging out and importing that, thus overwriting the existing accounts.

[coinsandsteeldev]

This is a MUST. Today new to crypto guys lost money just because of this stupid idea to override previous account. Like really guys, wallets in mobile already do it LONG time ago.

[bdresser]

thanks @leafcutterant, I agree this would be a really useful improvement.

Speaking with @danfinlay and @cjeria about this, importing an entire seed poses a bunch of UX challenges (around future account creation, recovery, etc.) that could make this a big project.

As a simple solution we can implement shortly, we could use similar UI to the recent Trezor feature. In the "Import Account" flow, after entering a seed, we could let you choose which specific account(s) from that seed you'd like to add. They'd be treated like standard loose/imported accounts in the extension.

[leafcutterant]

@bdresser, glad to hear that and thank you for discussing it! I agree that working the account hierarchies into one easily manageable system is a challenging task. Having to choose an address from the keychain and adding that as an account sounds like the logical step.

I like the sketches!

[rushairer]

When use "Connect" -> "Trezor"
How to input my passphrase of HD wallet?

MyEtherWallet had support that leave passphrase blank to access my default wallet or input my passphrase.

[KamiD]

keep watching on this issue