Trezor Bridge is a lightweight, secure connector (USB bridge) that safely links your hardware wallet to desktop apps, the web, and compatible services. It enables encrypted device communication, seamless firmware updates, and trusted transaction signing while keeping private keys offline.
Trezor Bridge acts as the secure gateway between your Trezor hardware wallet and host applications. It is responsible for creating an encrypted tunnel for commands, enabling reliable cross-platform compatibility (Windows, macOS, Linux), and providing consistent device access for wallets, exchanges, and dApps without exposing your sensitive keys.
Bridge uses secure channels to ensure messages between your device and applications cannot be intercepted or modified by third parties.
Install once and Bridge handles device detection, driverless integration, and robust USB communication on major desktop platforms.
Developers and integrators can rely on Bridge for consistent APIs and predictable device behavior — ideal for wallets, services, and enterprise integrations.
Trezor Bridge is designed to mediate device access without becoming a point of compromise. It follows the principle of least privilege: Bridge enables applications to enumerate and send requests to a connected device but cannot sign or authorize transactions by itself. All signing occurs inside the secure enclave of the hardware wallet, and every consequential operation requires explicit confirmation on the device's screen. This layered approach substantially reduces remote attack vectors while enabling modern web and desktop experiences.
Bridge exposes stable endpoints that developer tools and wallets can use to detect devices, query supported coins, and initiate signing flows. Consistent interface contracts allow integrations to provide seamless UX without re-implementing low-level USB logic.
Bridge transmits only the minimal information required for operations. It does not collect private keys, seeds, or transaction secrets. When consuming third-party services, Bridge keeps the user's ownership boundaries clear: the user always retains control over critical approvals via the hardware device.
Yes. When downloaded from verified sources, Bridge is a safe and minimal utility. Verify the download signature or checksum if provided, and only install releases from trusted distribution channels to avoid tampered installers.
No. Bridge acts as a communications layer. Private keys and seed phrases remain inside the hardware device and are never transmitted over USB or the network by Bridge.
Bridge is designed for major desktop platforms including Windows, macOS, and Linux distributions. Use the appropriate installer for your OS and follow platform-specific instructions when required.
Check your USB connection, try a different port or cable, restart Bridge, and ensure you have the latest Bridge version. If problems persist, consult official troubleshooting guides or community support channels for device-specific fixes.
Bridge provides a local service endpoint that browser-based wallets can query to detect devices and forward signing requests. This pattern enables secure web interactions while preserving hardware confirmations.