The "Require Passcode" feature actually saved my data (and possibly my life) when I got robbed at gunpoint. The robber turned on my iPhone and was able to unloc

The "Require Passcode" feature actually saved my data (and possibly my life) when I got robbed at gunpoint. The robber turned on my iPhone and was able to unlock it, so he assumed there was no PIN. He then turned off the phone to disable tracking (and inadvertently locked the phone, protecting my data and rendering the phone useless to pawn shops).