In‑Depth: How It Works Under the Hood
When you go to **Trezor.io/Start**, the system engages a series of cryptographic and integrity checks. It queries the connected device for signatures over firmware components, verifies them against known public keys, and ensures no tampering has occurred. It then uses a high‑quality entropy pool to generate your mnemonic phrase per BIP‑39 standards, and stores no copies of that seed on any server. Your PIN is processed only locally; the device never leaks it. After setup, the user interface relays transaction data to the device for signing — the private keys never leave the hardware.
This architecture ensures **end-to-end security**. Even if the host computer is compromised, as long as the firmware is genuine and the device is physically secure, your funds remain safe.