FaceId Bug

[Vlad Soare]

Hi,

I have three daughters. The eldest ones are twins, but not identical. They resemble each other to some extent, like two normal sisters, not like twins. The younger one is... well... younger.
Both twins are able to unlock their younger sister's iPhone Xs with their faces each and every time, without failure!!!
It's on the latest iOS version, 15.5.
How come?

Could it have something to do with the "improved" FaceId that purports to work with a mask on? But I thought that was supposed to work with the iPhone 12 or higher, while hers is an Xs. Consequently, the "use FaceId with a mask" option, or whatever it's called, doesn't exist in her Settings app.
Just to be clear, the girls aren't wearing masks. FaceId was configured with its owner's complete face, and the other two sisters, both of them, can unlock it with their full, uncovered faces. None of them wears glasses. And I repeat - it's not a one-off event. They actually can do it each and every time, as if it were their own phone.

Is there a setting that I'm missing, which could affect this?

Thank you.

 

[Sheepish-Lord]

Muzzles? You’re one of those individuals huh…

 

[Vlad Soare]

And you're one of those other individuals, huh...
Anything about my problem, by any chance?

 

[Graham Caracas]

VoiceID, available at the app store.

 

[Kyriakosss4]

Could it be that an alternative look has been set up for the other sister? I think in the settings there is such n Option?

 

[NT1440]

Hi,

I have three daughters. The eldest ones are twins, but not identical. They resemble each other to some extent, like two normal sisters, not like twins. The younger one is... well... younger.
Both twins are able to unlock their younger sister's iPhone Xs with their faces each and every time, without failure!!!
It's on the latest iOS version, 15.5.
How come?

Could it have something to do with the "improved" FaceId that purports to work with a muzzle on? But I thought that was supposed to work with the iPhone 12 or higher, while hers is an Xs. Consequently, the "use FaceId with a mask" option, or whatever it's called, doesn't exist in her Settings app.
Just to be clear, the girls aren't wearing muzzles. FaceId was configured with its owner's complete face, and the other two sisters, both of them, can unlock it with their full, uncovered faces. None of them wears glasses. And I repeat - it's not a one-off event. They actually can do it each and every time, as if it were their own phone.

Is there a setting that I'm missing, which could affect this?

Thank you.

Have you thought about whether they’re pulling a fast one on their parent by enrolling each other as alternative faces on each other’s phones?

 

[Vlad Soare]

Could it be that an alternative look has been set up for the other sister? I think in the settings there is such n Option?

Have you thought about whether they’re pulling a fast one on their parent by enrolling each other as alternative faces on each other’s phones?

No, I can definitely rule out this possibility. The little one is very keen on keeping her sisters away from her phone. And the other way around for that matter.
Besides, as far as I know only one alternative look is allowed, not two. When one of her sisters showed me that she could unlock the phone I thought it must have been a one-off error, but then the other one showed me that she could, too. 😄

It is, however, possible that she registered an alternative look of herself wearing glasses. I will check that. I don't see how this could fool the FaceId, since even with glasses she doesn't look like her sisters, but who knows...

 

[NT1440]

Are Apple watches at play here?

 

[Vlad Soare]

Are Apple watches at play here?

Good point.
The elder sisters have Apple Watches, which are paired with their own phones. The little one doesn't have one, but it is possible that she "borrowed" one of them at some point and paired it temporarily with her phone. I will check.

 

[pacmania1982]

Old news...

Face ID and identical Twins - Apple Community

discussions.apple.com

 

[Vlad Soare]

I see. The twins are not identical, and the little one is obviously not identical to either of them, but there may be something in this statement: "The statistical probability is different for twins and siblings that look like you and among children under the age of 13, because their distinct facial features may not have fully developed."
The little one is 11. That might explain it.
Thanks.