What it does
Self-Destruct Mode lets you set a separate passcode. Entering it on the lock screen deletes the local main vault, the local decoy vault and the encryption keys for both. The master key is deleted first, so anything left on the flash storage is unreadable noise. Burner Email tokens are removed too. The app then opens a clean, empty vault.
What it does not do
It does not touch a separate encrypted backup you saved elsewhere. If you keep an encrypted backup in iCloud Drive, that file stays where it is, still encrypted with the passcode and recovery keys it was created with. That is deliberate: self-destruct is for the phone in your hand, not for your only copy.
Setting it up
Settings, Self-Destruct Mode. Every warning lives at setup, including a confirmation that there is no undo. The self-destruct passcode cannot match your real or decoy passcode.
