Overview
Trezör Bridge is the lightweight connectivity layer that lets your Trezor hardware wallet communicate with web wallets, dApps and desktop apps. It acts as a secure translator between USB/HID devices and browser-based WebUSB/WebHID APIs while preserving the strongest security properties of the hardware wallet.
Why Bridge matters
Security-first connectivity
Trezör Bridge avoids exposing private keys to the browser. All sensitive operations (signing, key management) remain inside the Trezor device — Bridge only forwards encrypted requests and responses.
Compatibility
Bridge supports modern browsers and common Web3 apps, enabling interactions with wallets, exchanges, and DeFi platforms without sacrificing ergonomics.
Developer-friendly
With open-source libraries and clear documentation, developers can integrate hardware-backed authentication into web apps quickly and securely.
How it works (high level)
- Install the Bridge service on your computer and pair your Trezor device.
- Your browser dApp sends a JSON-encoded request to Bridge via WebSocket/WebHID.
- Bridge translates and forwards the request to the Trezor over USB/HID.
- Trezor prompts you to confirm actions on the device screen.
- Response is signed inside the device and returned to the dApp via Bridge.
Best practices for users
- Always download Bridge and Trezor Suite from official sources (links provided).
- Verify device prompts — never approve unexpected signing requests.
- Keep Bridge and firmware up to date for security and compatibility.
- Use a dedicated browser profile for Web3 to reduce the attack surface.
Tips for developers
- Use the official Trezor Connect or WebUSB integrations rather than implementing custom signing flows.
- Implement clear UI flows that show users exactly what will be signed on-device.
- Test across browsers and platforms — fallback gracefully when native APIs are unavailable.
Conclusion
Trezör Bridge is a pragmatic, secure connector that keeps user keys where they belong — on the hardware device — while enabling rich Web3 experiences. Whether you’re a user, power-user, or developer, Bridge strikes a balance between usability and security.
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