It’s official: MetaMask now supports TREZOR

From now on, you can link your TREZOR device to MetaMask and you will be able to:

Check your account balance (ETH or Tokens).

Sign transactions — For ex. Send ETH and ERC20 tokens and collectibles, deploy contracts, etc.

Signing transactions with your TREZOR via MetaMask

- Sign messages — This will allow you to login / sign up to certain ÐApps like CryptoKitties

Signing messages with your TREZOR via MetaMask

… and basically everything that you were allowed to do before with MetaMask with one huge difference:

Your private keys ALWAYS stay in your TREZOR Hardware wallet.

Last but not least, there’s another point that’s worth mentioning… you might have seen that some ÐApps let you to use your hardware wallets directly, (and that’s great!) but that only works if the ÐApp developer spent the extra time implementing the integration.

By adding hardware wallet support inside MetaMask, we are allowing every single ÐApp that works with MetaMask to be used securely with a Hardware Wallet.

We hope that this kind of feature will increase the confidence and security in the entire Ethereum ÐApp ecosystem.

How does it work?

Once you connect any Ethereum account from your TREZOR device, MetaMask will treat that account just like any other account, with the only difference being that every time you need to sign a transaction, you’ll need to connect your TREZOR device and MetaMask will send a request to it to sign that specific transaction. Signing happens 100% inside your TREZOR device and your private keys are never exposed.

Another cool thing is that you don’t need to keep your TREZOR device connected all the time in order to see your different accounts and balances, but of course you can also opt to disconnect your device from MetaMask and link it again the next time you need to use it.

How to try it

First of all, you need to have the latest version of MetaMask installed in Google Chrome (other browsers will be supported in the future) and make sure you’re using the NEW UI, which is still in beta (but not for too long!). Then follow these steps:

Click on your account icon at the top right and you will see a new item “Connect Hardware Wallet”. Plug in your TREZOR device to your computer and click “Connect To TREZOR”. You will get a popup from TREZOR asking you for permission to export the public key, and once you confirm, you will see the list of Ethereum accounts from your TREZOR device in the MetaMask extension.

4. Finally, select the account you want to use, and click “UNLOCK”. That’s it!

This is how you access the Ethereum accounts from your TREZOR device

We’ve also added the ability to remove imported accounts, so if you want to stop seeing any that you imported into MetaMask, you can remove it like this.