Trezor Passphrase

One of the main reasons why I often recommend the Trezor hardware wallet in my book is its support for a so-called passphrase, an additional password that significantly increases the security of your bitcoins. While the seed (your backup, usually 12, 20, or 24 words) serves as the main key to your wallet, the passphrase is an additional password that you choose yourself. It can be a word, a sentence, or a combination of characters known only to you. This password is not part of the seed, but together with it creates a completely new and unique access to your wallet. Simply put:

Seed + passphrase = a completely new wallet
If you do not have the correct password, you will not be able to access your bitcoins.

How does it work?
After connecting the Trezor to your computer, you will be prompted to enter your passphrase as well. This sentence or password is then used to calculate a new, encrypted version of your wallet. This operation takes place only inside the Trezor, without the password being stored anywhere. Not even the Trezor itself remembers it – you must enter it every time you connect. If you enter the correct password, your actual bitcoin balance will be displayed.

However, if you make a mistake, for example entering “dom2024” instead of “dom2042”, Trezor will not know that it is an error. Instead of a warning, it will display a completely empty wallet because it has created a new, separate seed that has never been used before.

Why is it useful?

First of all, in case of theft. If someone steals your Trezor, they will not get access to your bitcoins – even if they obtain the seed, unless they also know your passphrase. To a potential thief, the wallet will appear empty.

Secondly, this allows you to create multiple completely independent wallets.

Each unique passphrase creates a completely separate wallet. For example, you can have:

one main wallet (e.g., with the passphrase “mojdochodok”),
one for your family (“preMojeDeti”),
one for your company (“firemneRezervy”)

All under one Trezor, yet separated from each other. Without the correct password, the given wallet cannot be accessed. In this way, one Trezor with one unique seed can be used by multiple household members, with each person only needing to know their own password.

What should you watch out for?

Write down your passphrase carefully – just like your seed.
Always enter it exactly – the system does not warn you if you make a mistake.
Do not keep it only in your head – memory can fail, especially after several years.
Never share your password with anyone you do not trust.

If you truly care about security, the passphrase is the strongest form of protection currently available in the world of hardware wallets.

Now that we know the theory, let’s set it up together. I would like to point out that setting up a passphrase is optional and not mandatory, but I strongly recommend it (provided that you correctly write down and store your password).

In Trezor Suite, click the Trezor icon in the top left corner. A menu will appear where you will find the option “+ Passphrase wallet” – click on it. If you do not see this button, do not worry – you can open the same function using the keyboard shortcut Alt + P.

You will see a field to enter your passphrase – your unique password.
Enter your chosen passphrase into the field (e.g., a sentence, word, or string of characters).
Click “Access Passphrase Wallet” – and a new, “hidden” wallet will open.

Remember, if you enter a different passphrase, a new empty wallet will open. If you enter the same passphrase, the same wallet will always be displayed.

Trezor has no way to verify what you have written – if you make a typing mistake, you will not create incorrect access, but an entirely different, empty wallet. Therefore, remember your passphrase or store it securely.

If you forget it, your coins are irreversibly lost.

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