Why a hardware login matters
Hardware wallets like Trezor isolate your private keys inside a physical device. The login process is intentionally different from a regular web account — you authenticate transactions directly on the device rather than trusting a remote server. This reduces attack surface and protects you from phishing, keyloggers, and remote compromises.
How Trezor login works — a high level
The Trezor device holds an encrypted seed and private keys. When you 'login' or sign a transaction, your software wallet (browser extension or desktop app) sends the transaction data to the Trezor. The device displays the transaction details on its secure screen — you verify and confirm using the built-in buttons. Only then does the device sign the transaction and return the signature. The private keys never leave the device.
Initial setup & safe first login
When you first power on a Trezor, follow the official setup flow. Avoid third-party guides that reproduce steps verbatim — they sometimes introduce errors. Important steps for a secure first login:
Passphrase vs PIN: what's the difference?
The PIN unlocks your Trezor locally and protects the device if stolen. The passphrase is an optional addition that creates a hidden wallet — think of it as an extension to your seed that produces a different set of keys. If used correctly, a passphrase can dramatically increase security; if lost or forgotten, the passphrase irreversibly locks those funds. Treat passphrase like a second private key: store it in a secure password manager or on an offline medium.