OOBSecret, a one-time channel for secrets

Field notes

The tool separates a credential from the communication channel carrying its link, then applies both a view limit and an expiry window. Users can select one to ten views, set lifetimes from one hour to thirty days, require a separately delivered passphrase, or let the recipient burn the record immediately. The page states that AES-256-GCM encryption occurs in the browser and that the key remains in the URL fragment rather than reaching the server.