Trezor Bridge: The Gateway to Cold Storage 🔒

**Seamless Integration. Uncompromising Security.** Connect your hardware wallet to the crypto world with zero friction.

Bridge to Decentralization

Trezor Bridge is an essential piece of software that facilitates communication between your Trezor hardware wallet and your computer's web browser. Without it, the encrypted, signed communication required for secure transactions would be impossible, forcing an archaic, less-secure workflow. **Our design philosophy is simple: keep the private keys private and the connectivity seamless.**

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🚀 Core Bridge Features

Native USB Protocol

Translates low-level USB communication directly to a secure local server interface, ensuring maximum efficiency and minimal latency for every transaction signature. No complex configuration required.

Cross-Platform Stability

Developed for robust performance across all major operating systems: Windows, macOS, and Linux. A single, unified install package ensures consistent and reliable connectivity on any device.

Zero-Configuration Firewall

Operates solely on the localhost interface, meaning it never opens external ports. This design choice maintains a crucial security boundary, effectively isolating the sensitive communication to your local machine.

Automatic Updates

Always stay protected. The Bridge automatically checks for and applies security patches and feature enhancements, guaranteeing compatibility with the latest Trezor firmware and Wallet features.

WebUSB Fallback

For modern browser deployments, Trezor Bridge complements the advanced WebUSB standard, offering the highest connection reliability and speed, transitioning effortlessly between protocols.

Simplified Diagnostics

Features an intuitive logging system that helps users or support staff quickly diagnose connection issues, streamlining the troubleshooting process without compromising security data.

⚙️ The Mechanics of Trust: How the Bridge Works

The core function of the Trezor Bridge is to establish a **secure tunnel** between the Trezor Wallet interface (running in your browser) and the physical Trezor device (connected via USB). This process is crucial because web browsers, by design, are isolated from deep system access, particularly USB protocols, for security reasons.

The Encrypted Loop:

  1. **Wallet Request:** Trezor Wallet initiates a transaction request via a **local WebSocket connection**.
  2. **Bridge Interception:** The Bridge intercepts this request (running as a small background service) on localhost:21325.
  3. **USB Translation:** It translates the digital request into the specific USB packets required by the Trezor device.
  4. **Hardware Signing:** The Trezor device securely signs the transaction using the offline private keys.
  5. **Response Sent:** The signed transaction is sent back through the Bridge, over the WebSocket, and finally to the Wallet for broadcast.

This entire process happens **within your local machine**, never exposing the private communication channel to the public network.

Ready to Connect?

Take the final step in securing your digital assets. Trezor Bridge is the foundational link for complete peace of mind. Download the latest version to ensure compatibility with all Trezor devices and the newest cryptocurrency standards.

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