Face ID Appears to Fail at Telling Apart Brothers Who Aren't Twins in New Videos [Updated]

Discussion in 'MacRumors.com News Discussion' started by MacRumors, Nov 4, 2017.

  1. MacRumors macrumors bot


    Apr 12, 2001

    With the iPhone X now in the hands of thousands of customers around the world, many early adopters are putting Face ID to the test to see if Apple's facial authentication system is as secure as it advertises.


    Apple says the probability that a random person in the population could look at someone else's iPhone X and unlock it using Face ID is approximately 1 in 1,000,000, compared to 1 in 50,000 for Touch ID, but it notes the probability of a false match is different for twins and siblings who look like you.

    We've already seen that Face ID can be fooled by identical twins, and now a video shared on Reddit appears to confirm that Face ID can sometimes fail to distinguish between siblings who aren't twins but have similar appearances.

    In the video, the sibling who set up Face ID on his iPhone X was able to unlock the device with his face as expected. Next, he handed the iPhone to his brother. Face ID didn't authenticate his brother's face upon first attempt, but once he put on a pair of black rim glasses, his face was able to unlock the iPhone X.

    Apple has been very transparent that Face ID can be less reliable in these situations, so the video doesn't come across as a PR disaster in the making for the company. But, it does visualize that Face ID isn't 100 percent failproof.

    For those concerned about the security of their iPhone X in these cases, Apple's only recommendation is to use a traditional passcode instead of Face ID for authentication. Unfortunately, at least for the time being, that means disabling one of the key new features of a smartphone that costs at least $1,000.

    Update: A similar video has surfaced of two half-brothers unlocking the same iPhone X with Face ID. The younger brother is supposedly 14 years old.

    Not only do the siblings look somewhat similar, but Apple said probability of a false match is also different among children under the age of 13, because their distinct facial features may not have fully developed. Perhaps the 14-year-old brother falls within that category, even if slightly older.

    Update 2: In a follow-up video, the original brothers who posted on reddit reveal that Face ID initially failed to authenticate the second brother, but after inputting the passcode several times after failed attempts, it began to authenticate his face. The brothers' faces were close enough in appearance that Face ID worked as intended by "learning" that it should recognize both brothers as the same person.

    Article Link: Face ID Appears to Fail at Telling Apart Brothers Who Aren't Twins in New Videos [Updated]
  2. AppleZombie macrumors 6502a

    Oct 27, 2012
    Just keep the phone away from Arya Stark and you should be o.k.
  3. crazyroo1 macrumors newbie


    Jun 12, 2017
    Machine learning. The more you use it, the more secure it gets. Setting it up and handing it to your brother on the same day is bound to throw an error
  4. Msivyparrot macrumors regular


    Apr 5, 2017
    South Africa
    Apple says 1:1 000 000, so logically Apple has allowed for 7 000 people to access each phone, given the world population is 7 billion, so 7 000 is 1:1 000 000 of the population...Apple a rethink needed!!!
  5. tito2020 macrumors 6502a

    Oct 16, 2011
    my dog looks like me does it mean he gets to unlock the phone ?
  6. Princejb134 macrumors regular

    Jul 22, 2012
    they look very alike actually. Just one is bald and one is not
  7. Cryates macrumors 68020


    Nov 19, 2013
    Chattanooga, TN
    Well I guess the brother was the 1 out of a million. Lol.
  8. RCS31 macrumors 6502


    Jun 28, 2013
    Looking for a place of freedom and rationality
    I think you need to re-think statistical chance..
  9. f1rd720 macrumors newbie

    May 3, 2012
    OK, who cares, nothing is 100%. Why is it that society must always try to make something fail or find fault? Why can't we try to find the positive in things in life and not usually always trying to find the negative.
  10. pat500000 macrumors G3


    Jun 3, 2015
    Maybe apple will implement personality detector for future iphone...
  11. dumastudetto macrumors 68030

    Aug 28, 2013
    I call BS on this. I simply don't believe their story.
  12. deanthedev Suspended


    Sep 29, 2017
    This x1000. Apple clearly states it learns and improves as you use it. You can’t just enroll a face then give it to your twin (this is what CNN Money did in their video - they literally handed it straight to the twin after enrollment).

    Won’t stop countless idiots from claiming it’s not secure, though.
  13. dominiongamma macrumors 65816

    Oct 19, 2014
    Tempe, Arizona
    Glad I waited until next year this seems like a beta product
  14. AngerDanger, Nov 4, 2017
    Last edited: Nov 4, 2017

    AngerDanger macrumors 68040


    Dec 9, 2008
    ← Downward Crow's Head
  15. AppleZombie macrumors 6502a

    Oct 27, 2012
    So if you lose it same day you might be screwed?
  16. Piggie macrumors G3


    Feb 23, 2010
    Is this you? :)

  17. Mayo86 macrumors newbie

    Nov 21, 2016
    You’ve got bigger issues than Face ID if you look like your dog.
  18. dominiongamma macrumors 65816

    Oct 19, 2014
    Tempe, Arizona
    Because this phone is a lot of money and Apple should be held to a high standard for quality
  19. PortableLover macrumors 6502a

    Apr 14, 2012
    That's one reason i believe a dual ID system would be better. Enable touch id or face id.
  20. az431 macrumors 6502a


    Sep 13, 2008
    Portland, OR
    Not even close. Pick up a book on calculating odds, then rethink your calculation and get back to us.
  21. Yoshimura macrumors regular

    Nov 2, 2012
    Exactly the same as with a 6-digit passcode.
  22. ocifersven macrumors member

    Jan 4, 2008
    Burbank, CA
    Maybe, just maybe, Apple should consider TouchID + FaceID to unlock. They’re all about 2-step verification these days. I could almost guarantee that the FaceID twins test would fail with the added step of resting a registered digit on a sensor.
  23. bniu macrumors 6502a

    Mar 21, 2010
  24. Scottsoapbox macrumors 6502a


    Oct 10, 2014
    Ack! I have three brothers! Totally insecure!
  25. makingdots macrumors 6502

    Aug 14, 2008
    you have more problem than losing the phone because the culprit is probably your brother or relatives

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