If you go quiet, this speaks for you.
Encrypt files, passwords, and messages today. They stay sealed until you miss enough check-ins — then your chosen people get access, and not a moment before.
How it works
Encrypt something worth protecting
Your files and messages are encrypted in your browser before anything reaches a server. The key is destroyed once it's split.
Check in on your own schedule
Miss a check-in and a grace period starts — plenty of room for a bad week. Miss that too, and the switch trips.
Recipients get exactly what you sealed
Not before, not partially. Your secret is split across your recipients, so it only reconstructs once enough of them respond.
Zero-knowledge, by design
Encryption happens in your browser — plaintext never touches our servers.
Your secret is split with Shamir's Secret Sharing, so no single recipient can open it alone.
Your files, message, and secret shares are stored as ciphertext we can't read.