This article details how to set up (initialize) your Trezor Model T hardware wallet for use with Casa App.
To begin, verify the integrity of the device box and the device to ensure that it is free from tampering.
Once your Trezor Model T has been unboxed, head over to suite.trezor.io in your browser. You will have the choice to either download Trezor's Desktop App, or use the web suite.
We recommend downloading the desktop app. The following instructions are written for the desktop app.
After downloading the desktop app, install it to your computer, open it up, and connect your Trezor Model T, using the provided cord.
If your device is not recognized once plugged in, head over to wallet.trezor.io/#/bridge to download the bridge and resolve this issue.
Next, you'll see a security check, which verifies the authenticity of your Trezor device. Click "Setup Trezor" at this step.
If this is your first time setting up this device, you'll be asked to do a firmware update.
Now you’ll need to complete the backup process. Choose “Wallet Backup”, confirm the action on your Trezor device, then press "Create Backup." You'll then select "Standard seed backup" in the next window.
During this backup process, you’ll be prompted to write down the 24 word seed phrase.
Casa multisig allows for a fully "seedless" setup, so if you'll be using this Trezor T exclusively with Casa, then writing down the 24 word recovery seed is considered optional.
You can write down the seed phrase if you choose to. If you ever lose or break the device, the seed phrase will be able to restore the Casa signing key on a new device.
See: Seedless Multisig for more info on this topic, and see what's right for you.
At this step, you can either "Begin Backup," or "Skip Backup" if you choose not to write down the seed phrase.
That’s it! Your Trezor Model T device is now initialized and ready to be added to your keyset.
You will see the option to name your Trezor if you wish, and change other settings about the device, but this is optional.
Finally, keep your Trezor somewhere safe and secret. Though there may not be funds in the wallet yet, keeping it secure and protected from tampering prior to funds placement is very important!
Your Trezor Model T can now be added to your Casa setup. See our Getting Started section for more information about setting up Key Shield or Basic Multisig in Casa App.