Trézór Bridge — The New Trézór App
A modern, secure bridge between your Trezor hardware and the apps you trust.

Trézór Bridge — securely connect your Trezor to the web and apps

Trézór Bridge is the official companion application that streamlines and secures connections between your Trezor hardware wallet and desktop apps, web dApps, and new Trézór features. It replaces older bridge tooling with a modern, audited, and privacy-aware design.

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Why Trézór Bridge?
It provides a secure, signed transport for communication between browser apps, desktop tools, and your Trezor device — with clear consent flows and device-led verification for every sensitive action.

Seamless connections

Connect quickly to dApps and desktop wallets while maintaining hardware-backed security; session permissions are explicit and revocable.

Privacy-aware

Bridge minimizes data sharing: it only transmits what's necessary for operations and uses ephemeral sessions wherever possible.

Developer-friendly

A stable, documented API helps dApp developers integrate hardware-backed signing without asking users to expose sensitive data.

Installing Trézór Bridge (the Trézór App)

Installation is intentionally straightforward. This section walks through preparing your system, installing the app, and granting the minimal permissions needed for secure operation.

1. Download from the official source

Visit the official Trézór site and download the app package for your operating system. Check the published checksums or signatures where provided to confirm file integrity. Avoid third-party mirrors.

2. Run the installer

Run the installer and follow on-screen prompts. The app may request permission to run a local, encrypted service to broker connections between the browser and your Trezor device — this service communicates only with the Trézór App and with explicit user consent.

3. Connect your Trezor

Open the Trézór App and connect your device using the official cable. The app will detect the device and perform a firmware/compatibility check. If firmware is outdated, the Suite or the device will guide you to install a signed update.

4. Authorize connections

When a web dApp or desktop wallet requests access, the Trézór App shows a clear, human-readable prompt describing requested permissions (e.g., address view-only, transaction signing). Approve sessions only for trusted apps and revoke them when no longer needed.

5. Manage sessions

The app provides a session manager where you can view active connections, inspect granted scopes, and immediately terminate sessions. Use this to keep tight control over which apps may interact with your device.

Troubleshooting

If the Trézór App doesn't detect your device, try a different USB port or cable, ensure the device is unlocked, and close any other software that may be accessing USB devices. For persistent issues, consult the official support resources.

Key features in depth

Trézór Bridge is built around a few core principles: explicit user consent, minimal data exposure, and logged, auditable actions. Below are notable features that implement those principles.

Scoped permissions

Apps must request fine-grained permissions. For example, viewing public addresses is separate from signing transactions. This helps you limit exposure and understand precisely what a connected app can do.

On-device verification

Even after a session is authorized, any operation that affects funds or keys will require the explicit approval of your Trezor device. The device shows transaction details for direct verification and signing.

Ephemeral sessions

Sessions can be ephemeral (single-use) or persistent. Ephemeral sessions are ideal for one-off interactions — they terminate automatically and reduce long-term exposure.

Developer sandbox & examples

The Trézór developer docs include sample code and a sandbox environment that demonstrates best practices for connecting to the Bridge. Developers are encouraged to follow recommendations for clear UX and minimal permission requests.

Security model & privacy

Security is central. The Trézór App never requests your recovery seed; private keys remain on the Trezor device. The Bridge only facilitates protocol-level messages and ensures that signing decisions always happen on-device.

  • Local-only communication: The bridge runs a local, encrypted channel — nothing is stored in the cloud by default.
  • Explicit consent: Every permission is visible and require explicit user approval.
  • Audit logs: The app keeps an accessible log of connection events and signing activity for review.

Use cases & workflows

Trézór Bridge supports common flows including WalletConnect-like integrations, on-site dApp interactions, offline signing workflows (PSBT), and developer tooling for building secure integrations. Typical user scenarios include:

  1. Signing a single transaction from a web dApp while verifying details on-device.
  2. Establishing a persistent connection to a trusted desktop wallet for frequent use.
  3. Exporting unsigned transactions for air-gapped signing and later broadcasting.

Frequently asked questions

Does Trézór Bridge store my keys?

No — private keys never leave your Trezor device. The Bridge only transmits protocol messages and signed transactions (not keys).

Is the Bridge open-source?

Parts of the Trézór App are open-source and available for audit. Check the official repositories and documentation for details.

Can I use Trézór Bridge on multiple devices?

Yes — you can install the app on multiple trusted machines, but sessions and permissions are managed per-installation and device to keep isolation.

What should I do if I see an unexpected signing request?

Deny the request, terminate the session, and investigate which app requested it. Check logs in the Trézór App and contact official support if you suspect compromise.

Developer notes

We provide a clean API for integrations and encourage developers to follow least-privilege principles. Example SDKs and a sandbox environment are available — link to the docs from the Trézór developer portal for code samples, best practices, and security guidelines.

Closing advice

Trézór Bridge modernizes how hardware wallets integrate with today's web and desktop ecosystem. Its design keeps keys isolated, gives users clear control over permissions, and creates a developer-friendly surface for secure integrations. Always download the app from the official site, verify signatures, and confirm all operations on your device.