What is Trezor Bridge?
Trezor Bridge is the official local connector that enables communication between Trezor hardware wallets and desktop browsers or native applications. It runs as a small background service on your computer and exposes a secure, local API that trusted applications can use to send commands to your hardware device — for signing transactions, viewing addresses, or managing device settings — without exposing private keys to the internet.
Privacy-first design
All communication happens locally. The Bridge never uploads your keys or transaction data to remote servers. No telemetry is recorded unless explicitly opted in.
Cross-platform
Official builds are provided for Windows, macOS (Intel + Apple Silicon), and major Linux distributions — with automatic updates for supported platforms.
Secure transport
Uses encrypted channels and per-session authentication to ensure only trusted apps can interact with your device while it is unlocked.
Developer-friendly
Simple API and test utilities for application developers; examples and SDKs are available in the developer docs.
Security & best practices
Security is the primary concern for any hardware wallet workflow. The Bridge intentionally minimizes surface area: it only accepts connections from local host, authenticates apps where required, and prompts you on the Trezor device for every sensitive action. Always verify the address on the device screen before approving a transaction, keep your device firmware up to date, and download Bridge only from official sources.
Frequently asked questions (FAQ)
1. Do I need Bridge to use my Trezor?
Yes — Bridge is required for most desktop browsers and native applications to communicate with a connected Trezor. Some browser extensions or mobile apps use alternate transports (like WebUSB or native mobile integrations), but Bridge ensures a reliable, secure desktop connection.
2. Is Bridge safe? What data is transmitted?
Bridge is designed to transmit only local requests between your computer and the Trezor device. It does not collect or send private keys, seed phrases, or transaction signatures to any external servers. Minimal telemetry (if enabled) is anonymized and limited to diagnostics — you can opt out at install.
3. My browser can't find the device after installing Bridge. What should I do?
Common fixes: restart the browser, reboot your computer, ensure the cable is data-capable (not charge-only), and allow USB permissions when prompted. On macOS you may need to allow the helper app in System Preferences → Security & Privacy.
4. Does Bridge auto-update?
On supported platforms Bridge can notify you or install updates automatically depending on your settings. We recommend keeping automatic updates enabled to receive security patches and compatibility fixes promptly.
5. Can I use Bridge with multiple Trezor devices at the same time?
Yes — Bridge supports multiple connected devices. When multiple Trezors are present, the app or website will let you choose which device to use and require confirmation on the chosen device before proceeding.
More detailed contact options
We provide several ways to contact support depending on urgency and topic. For general product questions and installation help, use the support email or live chat. For security disclosures, use the dedicated security email. For press and partnerships, contact our partnerships team. Below is a short directory:
If you require human support outside working hours, please include your OS type, Bridge version (if installed), short description of the issue, and any logs you can safely share — this speeds up troubleshooting.