Trezor® Bridge® — Secure Your Hardware Wallet®

The invisible layer that connects your browser to your crypto vault — fast, private, and built for uncompromised protection.

Official Technology Overview

Introduction

The digital era demands not only access but assurance. Trezor® Bridge® was designed as a trusted middle layer, enabling communication between web applications and your Trezor hardware wallet without exposing your private keys. Think of it as a personal courier — silent, efficient, and loyal only to your commands.

While modern browsers evolve rapidly, they often restrict direct access to USB devices for security reasons. Bridge solves this by creating a local, encrypted channel between your device and official wallet interfaces such as Trezor Suite or Trezor.io/start. This ensures smooth transactions, safe firmware updates, and quick hardware recognition — all without revealing sensitive data.

    Key Idea: Bridge never stores your recovery phrase or keys; it simply forwards communication commands in a secure manner.
  

Core Purpose and Vision

The mission of Trezor Bridge is simple yet critical — to maintain usability while upholding maximum privacy. In the cryptocurrency world, where convenience often collides with caution, Bridge offers balance. It allows wallet operations through a seamless interface while keeping cryptographic signing locked to your hardware wallet.

Local First

Your data never leaves your computer. The Bridge operates locally, creating a confined digital perimeter that isolates private keys from online threats.

Privacy by Architecture

Every request is checked, sanitized, and forwarded without interpretation. This architectural neutrality ensures Bridge cannot act on your behalf — it can only communicate what the device confirms.

Auditable and Transparent

Open-source design means anyone can review its code, verify how it works, and confirm there are no hidden data paths or backdoors.

How It Works

Once installed, Trezor Bridge listens quietly in the background. When you open the web version of the Trezor Suite or initiate a transaction from an integrated application, the browser contacts the Bridge. Bridge validates the request, establishes a secure session with the device, and routes messages through an isolated tunnel. All signing happens within the device itself — Bridge only observes and transmits encrypted communication.

Step-by-Step Flow

User connects the hardware wallet via USB.
The browser detects Bridge and sends an authorization request.
Bridge checks if the request is from an approved origin.
Once verified, data is exchanged through the local port — never through external servers.
After approval, the Bridge closes the session securely, ensuring zero residual traces.

Best Practices

Security is a continuous process. For an optimal experience and maximum safety, follow these best practices when using Trezor Bridge:

Always install Bridge from official Trezor domains and verify signatures if possible.
Keep both Bridge and your firmware up-to-date to benefit from ongoing improvements.
Disconnect your device when not in use to minimize physical access exposure.
Avoid third-party browser extensions that request access to USB or crypto interfaces.
Run Bridge on a personal, uncompromised system — avoid shared or public computers for transactions.

    Tip: When the Trezor Suite asks for authorization, confirm that the URL starts with https://suite.trezor.io — never trust lookalike domains.
  

Why Bridge Stands Apart

Many tools in crypto security focus solely on encryption. Bridge extends that philosophy to usability — ensuring that secure communication remains accessible for everyday users. Its lightweight footprint, human-centered design, and zero-knowledge workflow make it a unique pillar in the Trezor ecosystem.

As digital threats evolve, the principles behind Trezor Bridge remain timeless: minimal data exposure, maximum transparency, and uncompromised control. It is not just software — it’s a guardian that quietly connects trust and technology.