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I get a little annoyed with this defense. Automatic re-train is a "feature" you cannot turn off, cannot turn on, have no visual feedback that it occurs, and ul
by Someone1234 9y ago
I get a little annoyed with this defense.
Automatic re-train is a "feature" you cannot turn off, cannot turn on, have no visual feedback that it occurs, and ultimately weakens the security of your device.
If this is what is causing Face Unlock to fail then that's still just as much Apple's responsibility than any other methodology. You also have no way to knowing how much re-train has occurred since Apple doesn't provide that information.
- lotsofpulp 9y agoLooks like you can disable FaceID pretty easily: https://support.apple.com/en-us/HT208108 https://support.apple.com/en-us/HT208108 To disable Face ID, open Settings > Face ID & Passcode, and tap Reset Face ID. Doing so will delete Face ID data, including mathematical representations of your face, from your device. If you choose to erase or reset your device using Find My iPhone or erasing all content and settings, all Face ID data will be deleted.
- yummy 9y agoHello, Apple Support
- tonmoy 9y agoI think the GP was referring to turning off the auto train on faces when entering the correct passcode feature
- mikeash 9y agoYou can easily “turn it off” by not giving other people your passcode.
- nikanj 9y agoScenario: I'm driving, my wife tells me I got a text. I tell her my passcode, so she can read it for me. iPhone considers this an opportunity to train the face recognition to recognize "me" better. It doesn't bother me that she can unlock my phone, but I bet the facial model my phone has for "my" features is a weird hybrid.
- mikeash 9y agoSo, don’t do that? Systems don’t have to support every conceivable use case.
- ceejayoz 9y agoThat's a cop-out. This is an extremely common use case.
- mikeash 9y agoReally? First I’ve heard of it.
- johanj 9y agoReally? It’s been discussed a lot on various podcasts, on Twitter and I’ve heard multiple people IRL talk about that use case and the slightly annoyance it is with the iPhone X. It is pretty common for spouses to have a finger added on their spouse’s phone for unlocking it with Touch ID, e.g., when you’re driving and get a message, you can give it to your spouse who can reply. Many parents also have a finger added on their young children’s phones. None if these scenarios are really possible with Face ID, because you’ll end up training Face ID with two faces. And while phones are usually used by only a single person, it is not an uncommon scenario to have a secondary user.
- mikeash 9y agoYes, really. I don't listen to technical podcasts, and I haven't seen any Twitter or IRL stuff about it. Anyway, if you want to have a shared phone like this, get one that has Touch ID. Apple offers both. Or trust that Apple does this intelligently and doesn't train the facial recognition in this case when the face is too far out of bounds. As other commenters mentioned, I'm pretty sure that's how it works. It's not training based on your wife's face unless she looks a lot like you. And in that case, you want her to be able to unlock your phone, so isn't it a good thing?
- 9y ago
- lotsofpulp 9y agoOh oops, I didn't read carefully enough. Regardless, I think if you're interested in real security, both TouchID and FaceID are terrible (easy to use your body, by force if necessary, to bypass those), and passcode is the only secure option. FaceID and TouchID are just conveniences not affordable to those who have something to lose.
- happythomist 9y agoThere's nothing stopping a malicious actor from acquiring a passcode by force as well. https://xkcd.com/538/ https://xkcd.com/538/
- valuearb 9y agopasscodes are the least secure method for almost everyone.
- deleted 9y ago[deleted]
- babygoat 9y agoI get a little annoyed with this "everything should work perfectly exactly the way I want it to" expectation. If you give your passcode to someone with extremely similar facial features, you should expect that they'll be able to unlock your phone.
- Someone1234 9y agoAnd if you change your pass-code is the retrain data dropped or retained? This is an important piece of the puzzle and one Apple doesn't tell you.
- JimDabell 9y agoIf you want to drop the retrain data, go to Settings > Face ID & Passcode > Reset Face ID.