Trezõr brïdge® || Connect Your Web3 World Securely™

What is Trezõr brïdge®?

Trezõr brïdge® is a lightweight, locally running application that acts as a secure relay between your Trezor hardware wallet and the web applications (or desktop clients) you use to interact with blockchains. Instead of each web page trying to perform low-level USB operations, the browser speaks to the Bridge on localhost and the Bridge forwards signed JSON requests to the connected device. The security core remains unchanged: private keys never leave your hardware device and every sensitive operation still requires physical confirmation on the device's screen and buttons.

Why use the Bridge?

Trezõr brïdge® solves three practical problems at once: compatibility, usability, and safety. It gives dApp developers a single, stable interface to target across Windows, macOS, and Linux. It simplifies end-user setup by reducing the need for custom drivers or experimental browser APIs. And it improves safety by centralizing USB access into a signed, auditable binary — a smaller attack surface than allowing dozens of web pages and extensions to access USB directly.

• Consistent experience across platforms and browsers.
• Minimal friction for users: install once, connect many apps.
• Security preserved — all signing happens on-device, and approvals must be confirmed physically.

Quick install & setup

Install Bridge only from official sources. Typical steps:

1. Download the Bridge installer for your operating system from the official site.
2. Run the installer and approve any system prompts for USB or local-network access.
3. Plug in your Trezor device and unlock it with your PIN.
4. Open your web wallet or dApp — when prompted allow the localhost connection and confirm operations on the device screen.

Tip: Some users avoid a separate Bridge install by using the vendor’s bundled desktop app (for example, a suite application) which includes equivalent connectivity. Both approaches are valid; pick the one that best fits your workflow and threat model.

Security model — what to expect

Trezõr brïdge® is intentionally small and focused. It does not store private keys or recovery phrases; it only relays structured requests between the host and the device. The critical security guarantees come from the Trezor device itself: every address, amount, and operation is shown on the physical device and must be confirmed with a physical action. That out-of-band confirmation is what prevents remote attackers from silently signing transactions even if the host is compromised.

Important limitations: Bridge cannot protect a fully compromised host (malware that records your screen or clipboard, for example). It is also not a substitute for safe seed management or careful on-device verification.

Everyday workflows

Here are common tasks and how Bridge fits into them:

Add an account

1. Open your web wallet or desktop app while Bridge is running.
2. Connect and unlock your Trezor device.
3. Select the network or coin to add; the app will query public addresses from the device.
4. Confirm the address on your device screen when prompted.

Send crypto

1. Draft the transaction in your wallet UI (recipient, amount, fee).
2. Click send: Bridge relays the signing request to your device.
3. Verify the address and amount on your Trezor display and approve physically.
4. The signed transaction returns to the wallet and is broadcast to the network.

Troubleshooting — fast fixes

• If the app can't see your device, check that Bridge is running (system tray / activity monitor) and restart the browser.
• Try a different USB cable or port; some cables are power-only and won't pass data.
• On Linux, ensure udev rules are installed so non-root users can access USB devices.
• If you see unexpected prompts, stop and verify you’re using an official site or wallet before proceeding.

Short FAQ

Do I always need Bridge? Not always — some setups use WebUSB or a bundled desktop client. Bridge is the most reliable cross-platform option.

Is Bridge safe? Yes, when downloaded from official sources and used on a clean host. It only relays requests; the device enforces final confirmations.