This is what Chap GPT says …
Yes, it is possible to achieve a similar level of security and separation of funds using a single Trezor device with two passphrases. Trezor allows you to set up multiple “hidden” wallets using different passphrases, effectively creating separate wallets under the same device.
Here’s how it works:
- Main Wallet (No Passphrase): When you first set up your Trezor device, you create a standard wallet that doesn’t require any additional passphrase. This is your default wallet, and funds stored here are accessible without a passphrase.
- Hidden Wallets (Passphrase Setup): Trezor supports the use of passphrases for additional layers of security. By entering a passphrase during the device setup, you create a separate, hidden wallet. This passphrase is needed each time you want to access this wallet. You can set different passphrases for different wallets, and they will appear as completely separate wallets, each with its own set of addresses and private keys.
- For example, you can have Wallet #1 (for cold storage) where you use a strong passphrase that you rarely use and store funds with the intention of never connecting to exchanges.
- You can set Wallet #2 (for trading) with another passphrase, and this wallet would be used for active transactions or trading, where you connect it to exchanges.
Advantages of this approach:
- Reduced Risk of Compromise: If one wallet is compromised (e.g., through an exchange hack or exposure while trading), the funds in the other hidden wallet (cold storage) would remain safe, as they require a different passphrase to access.
- Convenience of a Single Device: You only need to manage one Trezor device for both wallets, so it’s simpler to use compared to maintaining two devices. However, you still get the security of separate, isolated wallets with distinct passphrase protection.
Things to Keep in Mind:
- Passphrase Security: The security of the second wallet relies on the secrecy of the passphrase. If someone gains access to your passphrase, they can access the funds in that wallet.
- Backup: You need to securely store the backup for the passphrase and the recovery seed for your device. Losing either one would mean losing access to your wallet.
In conclusion, while using two separate Trezor devices (one for cold storage and one for active trading) can offer added peace of mind with physical separation, using two passphrases on a single Trezor device can achieve a similar outcome and is a viable option for most users.