This still leaves your device in an AFU (after first unlock) state, with user data decrypted, and should not be treated as secure.

The only thing you can do (to protect your data from forensics, etc) is to return it to BFU by shutting it off.

Correct. This is a classic security vs convenience tradeoff. I mention that trade off on the landing page, PanicLock vs Shutdown

> Use shutdown when you can, PanicLock when you can't. Shutting down is the most secure option—but when you need your Mac locked now and you'll be back in five minutes, PanicLock is your answer.

*PanicLock* - Fast "oh shit" button - Lid closed when in transit. - Instant lock (1 second). Disables Touch ID immediately - Preserves your session - Back to work in minutes

*Full Shutdown* - Maximum security - Purges encryption keys - Fully locks FileVault - Takes time to shutdown & restart - Kills your session

Better than nothing and keeps them from having unlocked access. You can do it fast in your pocket.

Bringing up the shutdown screen (hold lock and either volume button) will also do it.

I did not know that. That is extremely convenient. Thank you.

Tapping it 5 (6? 7? 20?) times works better while panicked, though.

- TSA: Hey, bring your bag and devices here. Routine inspection.

- Traveler: [takes phone from the bin] [finds lock button] [click] [click] [click]

- TSA: Hey, stop what you're doing Mr. Terrorist!

That is why you would do it before you let your phone go out of sight. I used to even turn off my electronics to prevent damage by scanners. Now I don’t bother anymore but it could be a plausible excuse.

On GrapheneOS (and maybe android generic?) this calls the emergency number, I just found out (with a 5 second timer to cancel this luckily)

It is also an option in iOS under Settings -> Emergency SOS. And with it turned on it will both call emergency services and require pin for unlock.