Face ID Double Security Feature!

Been using the iPhone X since launch regularly (and who hasn't) and noticed a security feature that locks Face ID if it thinks you're trying to fool it. Has anyone notice it?

If someone else tries to unlock your phone via FaceID it will most certainly fail, but if the phone is passed to the registered owner and tries it again immediately after (without turning the phone off), it won't unlock until you actually turn the screen off and on again (or hit cancel and swipe again). I discovered this when I was showing off FaceID to my friends, and every single time it did this, which was kind of embarrassing.

Similarly, if FaceID fails to recognize the registered owner's face the first time, it will not function until the phone is turned off and on again or cancelled and swiped again.

As far as I know, this is not in Apple's documentation online so if anyone thinks it's failing on them, think about my observation above.

 

That’s exactly what I’m talking about. The fact that you won’t be able to use it after a failed attempt, unless you turn the phone off and on, makes me think that was done purposely as an added security feature.

 

Sorry I missed that...is that documented somewhere?

In any case, what I’m saying is that if someone else tries to unlock the phone via FaceID, and one who doesn’t know my passcode, the phone will not unlock via FaceID until it’s turned off and on. Now if it’s me it didn’t recognize the first time, I can simply type my passcode and the tech will learn in time, right?

 

Pardon me, yeah, you can swipe up (updated my original post). The mere fact it’s wanting to start over (either via switch or swiping up) is the extra security feature I’m getting to.

 

Yeah, I know that.

That’s not what I’m trying to convey...yeah you can swipe up instead of turning the phone off, whatever but the fact it’s wanting you to start over is the added security I’m talking about.

--- Post Merged, Nov 11, 2017 ---

Sorry but you lost me...thanks for chiming in anyway.

 

I see it not as a technical limitation of Face ID but a function. Of course there are times that Face ID will fail (due to the phone’s angle, etc.), but there are times it just won’t unlock your phone because it saw a different face altogether and immediately trying to unlock it with the proper registered face afterwards will not do it unless you start over. That’s what I’m trying to say here. You would think it will unlock after seeing the registered face immediately (while the screen is still on and was not turned off), but it will not unless you start over.

 

The extra security feature (or extra effort needed - if we don’t have to call it a security feature) was implemented to give it a some sort of “pause”. It’s Face ID’s way of telling the user: “Hey! Start over..I don’t trust you”.

And to me this is the added security or “sense of security”, if I may call it that.