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But it will be the false negatives that will by far be the most annoying and noticeable. I mean how often will it be aimed at a wrong face compared to the righ

But it will be the false negatives that will by far be the most annoying and noticeable. I mean how often will it be aimed at a wrong face compared to the right face? I'm very curious about that. Generally measurements can be tuned in a way that exchanges false positives for false negatives (i.e. increasing sensitivity at the cost of specificity (or precision) meaning the phone can be made to be more sensitive to your face specifically (which is what they advertise with) at the cost of an increase in not detecting your face while it should.)

shinratdr 9y ago
> But it will be the false negatives that will by far be the most annoying and noticeable. How do you know that's what it means? You have literally no idea if this report is even true, or what the implications of it would be if it were true. People are drawing a lot of conclusions from an unsubstantiated report on a brand new unreleased feature for a phone that nobody has yet and has never used in the wild.
- hyperpape 9y ago
  I don't worry a lot about my phone having a miniscule probability of unlocking for someone else. I like security, but I don't actually think anyone is after my phone (YMMV). On the other hand, if I can't unlock my phone quickly and reliably, that's a pain in the ass. I know that, because my kid dropped my iPhone 6s just the right way, and TouchID hasn't worked for months.
- teekert 9y ago
  I'm just saying that 1 in 10000 (or whatever) false positives is a very poor metric for day to day usability. I agree a lot is unclear, including the data they do provide. Sure, it may still be a killer feature that, in practice is much better and safer than a fingerprint reader, I have no idea.
bdcravens 9y ago
Touch ID for my right hand usually stops working in a few weeks, and I have to delete and add those fingers/thumb back in. (Probably related to diabetes) My Google Pixel XL (it's a testing device) has the same issue it seems. I'm hoping Face ID will be more reliable.
deleted 9y ago
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shinratdr 9y ago

> But it will be the false negatives that will by far be the most annoying and noticeable. How do you know that's what it means? You have literally no idea if this report is even true, or what the implications of it would be if it were true. People are drawing a lot of conclusions from an unsubstantiated report on a brand new unreleased feature for a phone that nobody has yet and has never used in the wild.

hyperpape 9y ago
I don't worry a lot about my phone having a miniscule probability of unlocking for someone else. I like security, but I don't actually think anyone is after my phone (YMMV). On the other hand, if I can't unlock my phone quickly and reliably, that's a pain in the ass. I know that, because my kid dropped my iPhone 6s just the right way, and TouchID hasn't worked for months.
teekert 9y ago
I'm just saying that 1 in 10000 (or whatever) false positives is a very poor metric for day to day usability. I agree a lot is unclear, including the data they do provide. Sure, it may still be a killer feature that, in practice is much better and safer than a fingerprint reader, I have no idea.

bdcravens 9y ago

Touch ID for my right hand usually stops working in a few weeks, and I have to delete and add those fingers/thumb back in. (Probably related to diabetes) My Google Pixel XL (it's a testing device) has the same issue it seems. I'm hoping Face ID will be more reliable.

deleted 9y ago

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