How Gatebridge works
Gatebridge turns your Android phone into a hardware-backed security key for a remote Linux server. It sits between the server and your phone, carrying sign-in requests across the gap.
What happens when you sign in
- You visit a website or open an admin panel on your Linux server. It asks you to sign in with a security key.
- A small program on the server (the daemon) receives that request.
- The daemon forwards the request to your phone over an encrypted connection. Your phone never talks to the website directly.
- Your phone asks for a fingerprint or face. It signs the request using a secret that only exists inside the phone's security chip.
- The signed response goes back to the server. The website sees a normal security-key sign-in. It never learns the secret.
What you need
- An Android phone with fingerprint or face unlock.
- A Linux server you can run a small program on (VPS, bastion, dev box).
- Network access between the two (through our relay, or your own).
What Gatebridge is for
If your team signs in to remote Linux servers and you want stronger protection than passwords, Gatebridge uses the phone everyone already carries. No extra hardware to order, ship, or replace.
What it is not
Gatebridge does one thing: it lets your phone act as a security key for remote servers. It is not a password manager, not a replacement for SSH keys, and not a full identity platform. If you need those, other tools do them better.