Genuine question: will identical twins be able to unlock each others' phones? Or do they actually have enough differences that the phone can pick up on, even if people can't tell them apart?
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Face ID is replacing Touch ID on the new iPhone X
71–80 of 81 posts
Re: Face ID is replacing Touch ID on the new iPhone X
#72Earlier quoted context omitted.
Might vary with the make of the sunglasses, but I took an IR photo of a colleague wearing sunglasses, and on the photo the glasses were completely transparent. So the FaceID has a good chance to work with sunglasses.
That’s a bad sign, usually good sunglasses also block IR and UV light, as the eye only closes the iris based on visible light, but can still be damaged by too much exposure in IR or UV bands.
What are some examples of sunglasses that block IR? When I looked around earlier (curious about the same question) it didn't seem to be a standard feature at all.
Re: Face ID is replacing Touch ID on the new iPhone X
#73Re: Face ID is replacing Touch ID on the new iPhone X
#74They say that Face ID falsely recognizes 1 in 1,000,000 people (1 in 50,000 for Touch ID), but it's a lot easier to find the people who look like a given target to unlock their phone. Could be an issue if a mutual friend knows someone who looks enough like you to unlock your phone.
Just because someone "looks like" your target to you doesn't mean they're similar enough to fool whatever algorithms the iPhone is using.
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Re: Face ID is replacing Touch ID on the new iPhone X
#75They say that Face ID falsely recognizes 1 in 1,000,000 people (1 in 50,000 for Touch ID), but it's a lot easier to find the people who look like a given target to unlock their phone. Could be an issue if a mutual friend knows someone who looks enough like you to unlock your phone.
Just because someone "looks like" your target to you doesn't mean they're similar enough to fool whatever algorithms the iPhone is using.
Ironically people who look like you to humans tend to be a further away to biometrics.
I've worked on a few facial biometric systems in the past and the false positives were really shocking about 65% of them were cross sex and virtually none of them looked alike.
People tend to look at different flesh centric facial features and things like hair style, eye color and overall superficial appearance is what we see. Biometrics see distance between various points like eyes, nose bridge cheek bones etc we tend to actually overlook those fine features when it comes to doppelgängers.
From friends that still work in the field gate analysis seems to have the lowest rate of false positives yet so maybe IPhone X2 will require you to dance to unlock.
Re: Face ID is replacing Touch ID on the new iPhone X
#76This has not been well thought out for part of the world. https://www.pri.org/stories/2012-08-13/expand-job-opportunit...
What about twins? Does touch ID even work with twins?
Twins shouldn't be a problem. Even the ghetto facial recognition implementation in the AliPay app (a Chinese PayPal clone) can tell twins apart. Surely Apple can do an even better job.
Re: Face ID is replacing Touch ID on the new iPhone X
#77Earlier quoted context omitted.
Just because someone "looks like" your target to you doesn't mean they're similar enough to fool whatever algorithms the iPhone is using.
Ironically people who look like you to humans tend to be a further away to biometrics. I've worked on a few facial biometric systems in the past and the false positives were really shocking about 65% of them were cross sex and virtually none of them looked alike. People tend to look at different flesh centric facial features and things like hair style, eye color and overall superficial appearance is what we see. Biom…
> From friends that still work in the field gate analysis seems to have the lowest rate of false positives yet so maybe IPhone X2 will require you to dance to unlock.
Please sneeze to unlock phone
Re: Face ID is replacing Touch ID on the new iPhone X
#78Earlier quoted context omitted.
Yes. So how much do look-alikes change that number? It's 1/1M for strangers. Is it 1/10k for family members? 1/100 for close look-alikes? The difference between FaceID and TouchID is that you don't have pictures of millions of people's fingerprints available publicly online...
Exactly. Someone mining Facebook could build a directory of doppelgängers near each person. A little social engineering could get a bystander to unlock the target's phone without them even realizing they are facilitating a crime.
Ah, HN-level paranoia.
Re: Face ID is replacing Touch ID on the new iPhone X
#79Earlier quoted context omitted.
Exactly. Someone mining Facebook could build a directory of doppelgängers near each person. A little social engineering could get a bystander to unlock the target's phone without them even realizing they are facilitating a crime.
Ah, HN-level paranoia.
That's what they used to say about Stallman.
Re: Face ID is replacing Touch ID on the new iPhone X
#80Earlier quoted context omitted.
Ironically people who look like you to humans tend to be a further away to biometrics. I've worked on a few facial biometric systems in the past and the false positives were really shocking about 65% of them were cross sex and virtually none of them looked alike. People tend to look at different flesh centric facial features and things like hair style, eye color and overall superficial appearance is what we see. Biom…
> From friends that still work in the field gate analysis seems to have the lowest rate of false positives yet so maybe IPhone X2 will require you to dance to unlock. Please sneeze to unlock phone
Fast DNA analysis can be even worse like 1 in 10,000.