Why a new Trézor App?

We reimagined the user experience for interacting with Trezor hardware wallets from the browser. The new Trézor App bundles the trusted Bridge service with a redesigned UI, better permission controls, faster connection flows, and improved diagnostics for developers. The goal is to reduce friction while preserving the strongest security guarantees: private keys remain on the device and user consent is always required for signing operations.

What’s included

Key benefits for users

• Faster connections: improved handshakes reduce waiting time between click and authorization.
• Clearer consent: readable transaction previews and explicit origin information make approvals safer.
• Better oversight: permission audits help you see which sites can access your device and for how long.
• All-in-one installation: one installer for the app and Bridge streamlines setup for new and returning users.
• Optional auto-update: let the app apply new Bridge releases automatically or choose manual updates for strict control.

How it works — under the hood

The Trézor App runs a small local service (the Bridge core) and exposes a tightly controlled API that browsers can use. When a web wallet requests an operation, the app verifies the origin, prompts the user, and forwards the request to the device. The device displays transaction details and handles the signing operation. At no point do private keys leave the hardware.

Installing the Trézor App

Important: Only download the Trézor App from the official Trézor website. Verify checksums and digital signatures if you are in a sensitive environment.

1. Download the installer for your operating system (Windows, macOS, Linux).
2. Run the installer and allow any system prompts (administrative privileges may be required on some platforms).
3. Launch the app and follow the step-by-step setup. You will be asked to allow Bridge to run as a background service — choose "auto-start" for convenience or "manual" for explicit control.
4. Connect your Trezor device with a data-capable USB cable. When a website requests access, use the app UI to review and authorize the request.

// macOS: open the app from Applications
open /Applications/Trezor\ App.app

// Linux: reload udev rules if installing manually
sudo udevadm control --reload-rules && sudo udevadm trigger

Permissions model

The app supports two main permission modes:

• One-time permissions: grant access only for the current session. Once the site or browser tab closes, the permission is revoked.
• Persistent permissions: allow repeated access for trusted sites. These can be revoked at any time from the privacy hub.

Privacy & security

Security is central to the Trézor App design. Key points include:

• Private keys remain on the hardware; the app cannot access them.
• All authorization actions require explicit user confirmation on the device and in the app when applicable.
• Installer checksums and code signing prevent tampering. We recommend verifying signatures if you operate in higher-risk contexts.
• Audit logs are stored locally; nothing is uploaded to the cloud without your consent.

Developer & integration features

Developers will find improved diagnostics and tools to ease integration and debugging. Highlights:

• Developer mode: enables verbose logs and raw connection traces for local debugging (never share private keys or recovery seeds).
• Origin testing: easily whitelist development domains and remove them after testing using the privacy hub.
• Updated SDKs: Trezor Connect libraries are updated alongside the app to reflect improved handshake flows and clearer error messages.

// Example: detect Trézor Connect in a web page
if (window.TrezorConnect) {
  TrezorConnect.getFeatures().then(response => console.log(response));
}

Troubleshooting — quick fixes

If you experience connection problems, these steps resolve the majority of issues:

• Use a known-good, data-capable USB cable (avoid charge-only cables).
• Try a different USB port (avoid hubs when possible).
• Restart the Trézor App and your browser; ensure the Bridge service is running.
• Disable privacy extensions that could block the browser prompt temporarily.
• On Linux, verify udev rules are installed and reloaded.

FAQ

Do I still need the desktop Trezor Suite?

Trezor Suite remains the recommended app for full device management and portfolio tracking. The Trézor App complements Suite by improving browser-based workflows and developer interactions.

Can I run the Trézor App alongside the desktop Suite?

Yes. They are designed to coexist. Bridge may be shared between apps where appropriate, but avoid running multiple competing services simultaneously to prevent port conflicts.

What happens if I revoke permissions?

Revoking permissions immediately stops a website from being able to request device actions. Persistent authorizations are removed and one-time permissions are already session-scoped.

Release & update policy

The Trézor App will receive periodic updates that include security fixes, performance improvements, and new features. Auto-update is available and recommended for the majority of users, but manual updates are supported for those who prefer stricter control.

Where to get help

Visit the official Trézor support center and community forums for guides, FAQs, and troubleshooting articles. For security-sensitive concerns, contact official support directly and never share your recovery seed or PIN with anyone.