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This completely ignores locality. As far as I am aware there is no reason to believe siblings or relatives should have similar fingerprints. On the other hand
by addicted 9y ago
This completely ignores locality.
As far as I am aware there is no reason to believe siblings or relatives should have similar fingerprints. On the other hand relatives are more likely to have similar facial features.
So for the people who have regular access to your phone, there is no reason to believe the fingerprints should be similar. There is reason to believe their appearances would be.
- mikeash 9y agoI bet the security is still pretty good even with similar-looking people. Otherwise we would have heard a lot more stories like this by now. In any case, I’m not trying to defend against my brother, I’m trying to defend against a random thief. They probably won’t look too much like me.
- ggg9990 9y agoA lot of people are trying to defend against their family member much more than against a random criminal.
- mikeash 9y agoThose people should consider a difference device, then, or only using a passcode.
- lagadu 9y agoDepends on how you define "random" thief. Random as in someone taken randomly from anywhere on earth? Yeah, faceId is likely more secure. Is it random as in someone taken randomly from your city or country (which is the most likely scenario)? Then we're talking someone who is likely significantly closer genetically and in appearance to you, which greatly increases the odds of the thief being able to unlock the phone. In more isolated places like islands this effect is even more pronounced. On the other hand, fingerprints don't suffer from that effect, as they're unaffected by genetic diversity.
- valuearb 9y agoSimilar looking people can’t unlock an iphone X. These are almost all cases where the phone was trained to recognize both people.