Trezor Bridge — Secure Device Communication

Learn how Trezor Bridge enables safe communication between your Trezor hardware wallet and computer.

Estimated reading
~8 minutes • 1500 words

Introduction

Trezor Bridge is a secure, lightweight intermediary that allows your computer applications (desktop or web) to communicate with Trezor hardware wallets over USB. It is an essential layer that abstracts low-level USB protocols while ensuring encrypted, authenticated communication between your device and the host.

Installation

  • Download Trezor Bridge from the official Trezor website.
  • Available for Windows, macOS, and Linux.
  • Follow on-screen installation instructions.
  • After installation, your system can detect Trezor devices and establish secure communication.

How it Works

  • Acts as a background service or local web server on your computer.
  • Handles USB connections and translates them to JSON messages for apps.
  • All messages are signed and encrypted for security.
  • Prevents malicious software from directly accessing your Trezor device.

Security Features

  • Encrypted communication between Trezor and computer.
  • Authentication ensures only trusted applications can communicate.
  • Prevents unauthorized USB traffic to your wallet.
  • Does not expose private keys outside the device.

Browser Integration

  • Trezor Bridge works with Trezor Suite, web apps, and browser extensions.
  • Enables seamless interaction without installing multiple drivers.
  • Detects when a Trezor device is connected and prompts connection.

Troubleshooting

  • Device not detected: check USB cable and port.
  • Bridge service not running: restart Trezor Bridge.
  • Firewall issues: allow Bridge to communicate through firewall.
  • Always use the latest Bridge version for stability.

Best Practices

  • Install updates promptly to maintain security.
  • Always download from official sources.
  • Verify device connections before signing transactions.
  • Keep backup software ready in case Bridge fails.

Summary

Trezor Bridge ensures your hardware wallet communicates securely with computers and web apps. By encrypting data, authenticating messages, and providing a standardized interface, it allows safe interaction with cryptocurrencies while preventing unauthorized access. Always keep Bridge updated, verify installations, and follow security practices for a smooth experience.