Nothing to show
Keep sensitive material in a hidden vault. Because nothing reveals it exists, you can truthfully present a device that simply has no hidden data to find.
A decoy to hand over
If you’re pressured to open something, surrender a decoy vault of innocuous content while your real vaults stay undetectable.
Can’t be opened off-site
Set a vault to open only when you’re physically at its location, so it can’t be unlocked if you’re taken elsewhere.