Your identity is something you hold.
Passwords can be stolen. Servers can be breached. Signetline keeps the thing that proves you're you off the internet entirely — sealed inside a small USB token, physically yours.
New here? Flash a token in your browser
Sealed by a token you hold
No password to set or remember — you just plug in the token.
Your private key lives inside the token.
The token encrypts it before it leaves your computer.
Signetline delivers the encrypted message. Only the recipient's token can open it.
No password. No recovery email. No private key sitting on a server.
There's no password prompt to fake and no reset email to intercept — signing in happens on the token, not by typing a secret anywhere a fake page could catch it.
Every message is sealed before it ever reaches our server. If our database were fully exposed tomorrow, it would hand over only ciphertext.
Every contact has a short seal fingerprint tied to their device. Compare it once, in person or over another channel, and you'll always know a change is real.
For anyone who wants the precise mechanism, not just the promise.
Your browser talks to the token directly over USB. Nothing about your private key ever crosses the network to get there.
Your private key is generated on the token and never leaves it. Every message is encrypted and decrypted inside the token, under a session key derived fresh per contact.
It passes sealed bytes between you and your contact and never holds a private key — a full database exposure would hand over nothing readable.
Flash a token in your browser, or register a handle if you already have one.