Why the Face ID unlock with a mask feature will only work on iPhone 12 and above

为什么只有iPhone 12及以上才支持人脸口罩解锁？

We all cried and whined when we discovered Apple’s Face ID system wasn’t compatible with face masks. And while the company introduced a few workarounds, it’s now ready for the real deal: Face ID that works with a mask on*.

当我们发现苹果人脸识别系统不能兼容口罩时，我们都很不满。与此同时苹果公司采用了几个解决方案，这即将变为现实：戴口罩也能人脸识别*。

You might ask why there’s an asterisk sign? It’s not a typo. It’s there because this new system will only work with iPhone 12 and above. BOOOOOOO!

你可能会问为什么有一个星号？这不是打错了字。之所以有型号是因为新系统只适用于

iPhone 12及以上版本手机。

Apple’s reasoning behind this is that the feature requires “advancements in the True Depth camera system.” And apparently, the pleb Face ID system on the iPhone 11 is not powerful enough.

Sadly, this mask-unlocking feature won’t work with iPad Pros at the moment either.

苹果对此的解释是这一功能需要“True Depth摄像系统的高级功能”。显然，iPhone 11上的普通人脸识别系统还不够强大。

让人难过的是，这个口罩人脸识别功能暂时也不适用于iPad Pro。

How will this work?

Apple’s currently testing this out with the iOS 15.4 public beta, and will roll

it out to all users in the coming months. To make Face ID work, the

company has worked on new algorithms, trained to identify areas around the eye region to unlock your device.

它是怎样工作的?

苹果当前在iOS 15.4 beta公开版本中进行测试，在未来几个月会推送。为实现人脸识别，公司开发了新的算法，训练其识别眼部周围区域以便解锁设备。

The firm claimed that this new feature’s security levels are the same as Face ID without a mask — an error rate of 1 in 1,000,000 tries.

Currently, your iPhone can recognize your face when you’re trying to unlock

it at an angle. However, to make it work accurately while wearing a mask, you’ll have to directly look at the iPhone.

公司声称新功能的安全级别与不戴口罩人脸识别相同——即错误率是百万分之一。

目前，当你想从某个角度解锁你的iPhone手机时，你的手机能够识别你的面部。但是，当带着口罩时，想要精准识别，你必须直视手机。

What if I wear glasses?

The new version of Face ID will support unlocking with a mask even if you

were wearing glasses. While it’s advisable to register your full face with glasses when you do the initial scan, you can add spectacles later. For

security reasons, Apple will allow up to four pairs of eyewear with each enrollment.

如果我戴眼镜了呢?

新版本的人脸识别支持口罩解锁，即使你戴着眼镜。但是建议你第一次扫描面部时要录入全脸，此后再加上眼镜。出于安全的原因，苹果允许每次录入四幅眼镜。

Okay, I have a compatible iPhone. What do I do?

If you’re itching to use this feature, you can go ahead and sign up for the iOS public beta to download iOS 15.4. You can read more about how to install a beta version on your phone here.

If you don’t want to do that, you might have to wait for a while before the update arrives.

好吧，如果我有一个兼容口罩的苹果手机，我要怎么做?

如果你想使用这一功能，你可以去注册iOS beta公开版并下载iOS 15.4。在这里你可以看到更多指导你如何安装beta版本到你的手机上。

如果你不想这样做，你可能需要等一段时间才能升级。

What about other iPhones?

At this time, you’re out of luck. But there are some alternatives: if you own

an Apple Watch, you can read our guide to set up your iPhone to unlock when you’re wearing a mask. In other cases, Apple has made it faster to bring up the passcode screen in just a few seconds if Face ID detects you’re wearing a mask.

We’ll update you with a detailed guide when this feature rolls out to everyone. Hopefully, we won’t have to wait long.

其他手机呢?

这次你就没有那么幸运了。但是有几个替代方案：如果你有Apple Watch，你可以读一读说明，设置手机，当你戴口罩时解锁手机。其他情况下，如果人脸识别检测到你戴着口罩，它会在几秒之内更快地唤醒密码界面。

当这个功能推送给大家的时候，我们会升级详细说明。希望不会等待太长时间。