使用面部特征等敏感信息锁定手机的想法可能会让人感觉有点不安全。您的面容 ID 上的数据存储在哪里？它真的能帮助你保护你的 iPhone 安全吗？使用Face ID是否意味着您现在是面部识别数据库的一部分？面容 ID(Face ID)可以安全使用吗？
面容 ID 被Apple吹捧为您可以使用的最佳生物识别安全措施。(biometric security)这也很容易，因为您无需记住任何内容即可简单地看着相机。
当然，您可以选择向手机添加密码（即使您启用Face ID也需要使用密码，以防万一它不起作用），因此与此相比，Face ID更安全?
事实是，您不必过度担心使用该功能，这就是原因。
Apple 如何存储您的面容 ID(How Apple Stores Your Face ID)
当你第一次制作Face ID时，在你脸上创建的数据永远不会真正离开你的 iPhone。它绝对不会添加到任何数据库、存储在服务器中或发送到其他任何地方。相反，它保存在 iPhone 上的处理器中，与主处理器分开，称为SEP或安全飞地处理器。
此外，您的面部的实际表示并没有实际保存（例如图片或 3D 模型），而是将您的Face ID的数学数据存储到内存中。因此，如果有人能够以某种方式进入此SEP，他们将不会看到您的真实面孔，而只会看到代表它的数字。
iPhone 的主处理器从不获取这些数据，它只识别SEP是否说你的脸与存储在那里的数据相匹配。因此，既然您知道自己的脸是安全的，您可能想知道使用该功能实际上有多安全。
面容 ID 的安全性如何？(How Secure Is Face ID?)
就实际保持手机锁定而言，Face ID是不是比密码更好的选择？Face ID以及Touch ID是(Touch ID)Apple用于旧设备的另一种生物识别安全方法，已被证明很难破解。
如果有人想尽办法在 3D 模型中创建你的脸的假版本以便进入你的手机，那么问题就来了。一旦您的身份以这种方式受到损害，您将无法再次使用您的面部作为安全措施。
但是，除非您是知名人士，或者您的手机上有某人可能想要的极其敏感的数据，否则此类情况并不需要您担心。如果任何小偷试图窃取您的手机，如果他们看到它已经通过其他措施得到保护，大多数时候他们不会太在意它。大多数小偷都不想经历尝试解锁手机的麻烦。
尽管如果他们下定决心，他们可能会强迫您查看手机以打开它。在这种情况下，Face ID基本上没有用，因为攻击者很容易将你的脸贴在手机上。那么有更好的选择来保护您的手机吗？
尝试改用长密码(Try Using a Long Passcode Instead)
虽然使用面容 ID(Face ID)总比不使用好，但如果您选择使用密码，您将始终拥有更好的安全性。(better security)密码的长度(Length)也很重要。4 位数字对计算机来说非常容易猜出，但添加的数字越多，解锁就越困难。
要了解较长密码的安全性，4 位密码可能需要 7 分钟才能破解，而 10 位密码可能需要 12 年。您还可以选择在 iPhone 上设置字母数字代码，这也增加了极大的安全性。
但是，如果您不太担心有人闯入您的 iPhone，并且没有真正在其上存储任何敏感信息，那么Face ID对您来说应该足够了。如果您确实需要额外的安全性，您始终可以选择在 iPhone 的设置 中更改您的面容 ID 和密码设置。(change your Face ID and passcode settings)
没有一种方法是完全安全的(No Method is Completely Secure)
当然，无论您使用什么方法来保护您的手机，没有什么是完全无法穿透的。总会有办法破坏安全措施。只需找出最不可能发生这种情况的问题。
在 iPhone 身份验证的情况下，很明显，使用长而复杂的密码是确保安全的最佳选择。但是，如果您对此不是很认真并且需要一些简单的东西，Face ID非常适合使用。
强烈建议使用尽可能安全的方法，因为俗话说，安全总比后悔好。几乎每个人都将手机用于处理敏感数据的重要任务，例如银行应用程序、保存的密码或其他个人信息。即使您认为这不会发生在您身上，手机也会一直被盗。无论您选择哪种方法，请确保您至少选择了一种。
Is iPhone Face ID Safe To Use?
The idea of locking your phone up using such sensitive information as your faсial features might feel a little unsafe. Where is the data on уour face ID stored? Does it actually help you keep your iPhone secure? Does using Fаce ID mean you’re now part of a facial recognition database? Is Face ID ѕafe to use?
Face ID has been touted by Apple as the best biometric security measure you can use. It’s easy too, as you don’t need to remember anything to simply look into a camera.
There is, of course, the option to add a passcode to your phone (and it’s required to use one even if you enable Face ID, just in case it doesn’t work), so how much more secure is Face ID compared to that?
The truth is, you don’t need to be overly worried about using the feature, and here’s why.
How Apple Stores Your Face ID
The data created on your face when you first make your Face ID never actually leaves your iPhone. It’s definitely not added to any databases, stored in a server, or sent anywhere else. Instead, it’s kept in a processor on your iPhone, separate from the main processor, called the SEP, or secure enclave processor.
Furthermore, an actual representation of your face isn’t actually saved (such as a picture or 3D model) but instead the mathematical data of your Face ID is stored to memory. So, if someone was somehow able to get into this SEP, they wouldn’t see your actual face, just the numbers that represent it.
The main iPhone processor never obtains this data, it only recognizes whether or not the SEP says your face matches the data stored there. So, now that you know your face is safe, you might wonder how secure using the feature actually is.
How Secure Is Face ID?
As far as actually keeping your phone locked up, is Face ID a better option than just a passcode? Face ID, as well as Touch ID, the other biometric security method Apple has used for older devices, have been shown to be pretty tough to crack.
The issue comes if someone were to go to some length to create fake versions of your face in a 3D model in order to get into your phone. And once your identity has been compromised in this way, you wouldn’t really be able to go back to using your face as a security measure again.
However, situations like these don’t really need to worry you unless you’re someone high-profile, or have extremely sensitive data on your phone that someone could want. And if any thief tries to steal your phone, most of the time they won’t care much about it if they see it’s already secured by other measures. Most petty thieves don’t want to go through the hassle of trying to unlock your phone.
Though if they were determined, it is possible they could force you to look at your phone in order to open it. In this case, Face ID is essentially useless because it’s easy for an attacker to put your face up to your phone. So is there a better option for securing your phone?
Try Using a Long Passcode Instead
While using Face ID is better than using nothing, you’ll always have better security if you opt to use a passcode instead. Length of the passcode matters, too. A 4-digit one is extremely easy for a computer to guess, but the more numbers you add the more difficult it becomes to unlock.
To get an idea of just how secure a longer passcode is, while a 4-digit code could take 7 minutes to crack, a 10-digit one could take 12 years. You also have the option to set up an alphanumeric code on your iPhone, which adds an extreme amount of security as well.
If you’re not too worried about someone breaking into your iPhone, though, and don’t really store any sensitive information on it, Face ID should be enough for you. And if you ever do feel you want extra security, you always have the option to change your Face ID and passcode settings within your iPhone’s settings.
No Method is Completely Secure
Of course, no matter what method you use to secure your phone, nothing is completely impenetrable. There’ll always be ways to compromise a security measure. It’s simply a matter of finding which ones are least likely for this to happen.
In the case of iPhone authentication, it’s pretty clear that using a long, complicated passcode is your best bet for security. But if you aren’t very serious about it and need something easy, Face ID is perfectly fine to use.
It’s highly advisable to use as secure of a method as possible though, because as the saying goes, it’s better to be safe than sorry. Nearly everyone uses their phone for important tasks with sensitive data, such as banking apps, saved passwords, or other personal information. Even if you don’t think it could happen to you, phones get stolen all the time. Whatever method you choose, make sure you do at least choose one.
