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Apple’s new Face ID technology appears only in the flagship iPhone X. This replaces Touch ID on that device, instead unlocking the phone via facial recognition. This has sparked some concern with users who have grown used to the speed and reliability of Touch ID and seen similar face recognition technologies fail. While the technology underlying Face ID isn’t new or revolutionary, Apple claims it’s implemented better than ever before.

How does Face ID work?

Face ID is powered by Apple’s TrueDepth camera. When the user enrolls in Face ID, this infrared camera scans their face and creates a depth map with more than 30,000 points. The iPhone X uses these points to create a mathematical model of the face and then stores that model securely. On future unlock attempts, the camera re-scans the user’s face and compares the result. If it’s sufficiently similar, the device unlocks.

With gaze detection, Face ID detects when users are looking directly at the phone. When they do, it unlocks. Otherwise, the device will remain locked. This prevents unwanted unlocking when the device is sitting near the user.

What about sunglasses, beards, and darkness?

The infrared light used by Face ID is invisible to humans, but it functions much the way normal light does. However, because its frequency is lower than regular light, it has a slightly easier time passing through some objects. This includes things like sunglasses which are typically balanced to block visible and ultra-violet (UV) light. This light exists at the opposite, high-frequency end of the spectrum of visible light. As a result, most sunglasses allow infrared light to pass. This permits Face ID to catch a glimpse even when sunglasses obscure your face.

Infrared light also allows Face ID to work in the dark. Because the camera provides its own light source in the form of an infrared beam, the system doesn’t require external sources of light to function. It can also use the flood illuminator (basically an infrared flash) to balance and normalize lighting on your face. And because this infrared light is invisible to humans, there won’t be a bright flash. This means that, even in total darkness or uneven illumination, the iPhone X should be able to correctly identify your face.

Is Face ID secure?

According to Apple, Face ID avoids common spoofing attacks that made other facial unlocking systems insecure. Because it uses a depth-sensitive infrared camera, attackers can’t fool the camera with a photograph. Even three-dimensional masks were apparently unsuccessful in fooling Face ID.

While the methods of avoiding three-dimensional spoofing haven’t been released, infrared light can penetrate the skin, allowing the TrueDepth camera to scan subdermal features that would be difficult (if not impossible) for mask-makers to replicate. We can also assume that the many thousand points of facial recognition make it difficult to create a mask with sufficient fidelity to fool the TrueDepth camera.

Like Touch ID’s fingerprints, the mathematical models of recognized faces stay within the iPhone X’s Secure Enclave. They’re encrypted, inaccessible to other apps and much of the OS, let alone attackers. Recognized faces exist only on the device and are not stored on Apple’s servers or synced to iCloud. And as far as we know, Secure Enclave has yet to be compromised.

Will Face ID replace Touch ID?

According to Apple, Face ID’s error rate is 1 in 1,000,000. This means that Face ID could unlock for the wrong person once in a million attempts. Touch ID had an error rate of 1 in 50,000, making Face ID more accurate by several orders of magnitude. And just like Touch ID, Face ID can also authenticate Apple Pay. Does this mean that Face ID will replace Touch ID eventually? If it turns out to be as easy and reliable as Apple claims, it just might.

Alexander Fox

Alexander Fox is a tech and science writer based in Philadelphia, PA with one cat, three Macs and more USB cables than he could ever use.

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Face Id Not Working After Ios Update On Iphone? How To Fix

If you’re unable to use Face ID to unlock your iPhone after a recent update or are having a hard time setting it up again, the following post should help you fix it.

When set up correctly, Face ID should work on your iPhone without fail. If you recently installed a new iOS update, Face ID may not work initially. That’s because, while updating to a new iOS version, your iPhone reboots after installation and requires you to enter your device passcode instead of Face ID. Once you enter your device passcode after a restart, you will be able to use Face ID for subsequent unlocks until you restart your phone again. 

If you entered the device passcode after an iOS update and Face ID isn’t able to detect your face when you attempt to unlock your iPhone, it could be because of the following reasons: 

There’s a bug in the software that’s preventing your iPhone from using the TrueDepth camera. 

The TrueDepth camera on your iPhone could be damaged sometime before, during, or after the iOS update. 

Your face or the TrueDepth camera is blocked causing facial recognition to fail. 

Your facial appearance might have changed between iOS updates. 

Several users have recently reported that their iPhones stopped unlocking with Face ID as soon as they updated to iOS 15.7.1 which was released as a Release Candidate sometime earlier. This, however, isn’t limited to iOS 15 as people who updated their devices to iOS 16 have also complained that they’re unable to use Face ID to unlock their phones. 

Related: Photo Cutout Not Working on iPhone? [Fix]

If you’re unable to use Face ID since updating your iPhone to a new iOS version, then the following fixes should help you get back to using it. 

Fix #1: Check if Face ID is set up on your iPhone

If Face ID has already been set up but hasn’t been enabled to unlock your iPhone, you can turn on the iPhone Unlock toggle inside the Face ID & Passcode screen. 

Related: Depth Effect Not Working on iOS 16 on iPhone? 7 Ways to Fix

Fix #2: Know when and how Face ID works 

Once set up, Face ID on your iPhone should work flawlessly to unlock your device, download apps, and make transactions. However, there are a few things to note when you’re unable to use Face ID:

Your iPhone won’t unlock using Face ID for the first when you restart or turn on your iPhone, i.e., after a reboot. You will need to enter your device passcode at least once for Face ID to work for subsequent unlock attempts. 

Face ID will only work in portrait orientation; so if you’re holding your iPhone in landscape mode, the device won’t be able to detect and authenticate your face for unlocking. 

If your device hasn’t been unlocked for more than 2 days or 48 hours, you may need to enter your device passcode to use Face ID again. 

If you haven’t unlocked your iPhone using your device passcode in the last six days and a half and haven’t unlocked your iPhone using Face ID in the last 4 hours, you will first have to enter your device passcode to use Face ID again. 

Face ID won’t work after 5 failed attempts to unlock your phone using your face. 

You cannot use Face ID to unlock your iPhone if you had activated the Power off slider or Emergency SOS function. 

Face ID won’t work if you requested a remote lock command for the selected iPhone from another Apple device. 

If you’re unable to use Face ID in any one of the above scenarios, we suggest you enter your device passcode and lock your iPhone again to see if Face ID is working. 

Related: Tap to Wake Not Working on iPhone 13 or iOS 15? How to Fix

Fix #3: Restart your iPhone 

Sometimes a bug in the system can prevent your iPhone from using the TrueDepth camera or any of its related sensors. If you’re unable to use Face ID to unlock your device, reboot it by first pressing and holding the Side button and any one of the Volume buttons until the power-off slider shows up. When this slider appears, drag it to the right for your iPhone to shut down. 

Now, wait for 30 seconds so your iPhone completely switches off. After this, press and hold the Side button until the Apple logo appears. When your iPhone boots up, enter your device passcode during the first unlock attempt and then check if Face ID works. 

As has been explained above, Face ID for many users stopped working as soon as their iPhones were updated to a new iOS version. The most recent of reports have come from people who updated their iPhones to iOS 15.7.1 as Face ID abruptly stopped working as soon as the update was installed. There are similar reports of users encountering Face ID issues after updating to iOS 16. 

Fix #5: Enable Face ID for apps and services on iOS 

While Face ID is primarily used to unlock your device, there are other places where you can use it on an iPhone. If you previously used Face ID to authenticate app purchases in the App Store, make transactions with Apple Pay and Wallet, open apps, and autofill passwords, but you cannot do that anymore, you can enable Face ID for such services again inside your iPhone settings. 

Fix #6: Set up an alternative appearance for Face ID

The TrueDepth Camera will be able to authenticate your face for unlocking your iPhone as long as certain elements of your face remain unchanged. If you recently started using glasses or trimmed your beard, your iPhone will have a hard time detecting your face. In such cases, we recommend setting up an alternative appearance for Face ID so that your iPhone approves your identity with both your new and old appearances. 

If your facial appearance changed between iOS versions, then this step may help your device’s machine learning to recognize your face more easily. 

Fix #7: Remove anything that blocks your iPhone’s Face ID sensors 

Your Face ID sensors are housed at the top of your iPhone’s display; so for your face to get detected, you must make sure that nothing is obstructing the view between your face and your phone’s TrueDepth camera. If the front camera and other sensors are dirty, Face ID won’t be able to detect your face, thus preventing you from unlocking your iPhone. 

It’s not just something on your phone that may block Face ID’s view but your appearance itself. If your face is covered by a hat or a mask, you will need to remove it to use Face ID as originally intended. Apple offers you an alternative method to open your iPhone with a protective mask which we’ll explain further in the next fix. 

Fix #8: Use an Apple Watch to unlock your iPhone

The COVID-19 pandemic resulted in many people stepping out of their homes with protective masks on their faces. This, however, prevented users from getting past their iPhone’s Lock Screen as Face ID doesn’t work when you have something blocking part of your face. If you’re unable to use Face ID because of a mask, there’s an easier way to unlock your iPhone which involves having an Apple Watch. 

Fix #9: Reset Face ID on your iPhone 

If none of the above fixes work in your favor, you can try to reset Face ID on your device. This action will remove all the saved faces from your iPhone so that you can add new ones. This may be helpful when there’s a bug in the software that’s preventing Face ID from using your old facial scans to detect your identity. 

Fix #10: Reset all settings on iPhone 

If resetting your Face ID was unsuccessful in making Face ID work again, then you can try resetting your iPhone’s entire settings configuration for once as your last resort. We recommend you take this step only after trying out all the fixes listed above as this action will end up removing all of your device’s settings including your Wi-Fi and Bluetooth connections, your Home Screen and Lock Screen layout, app permissions, and other preferences that you may have set up on iOS. 

After your device reboots, you can then set up Face ID on your iPhone as new again by following the steps explained in fix #1. 

Fix #11: Reach out to Apple Support

When Face ID fails to work on your iPhone after following all the above fixes, then there’s a chance that the issue you’re facing is due to a hardware malfunction inside your device. If you dropped your iPhone recently, the TrueDepth Camera or the related sensors may have taken a knock during the fall. Since these sensors are delicate, a slight change in position can trigger loose connections or get damaged in the process. 

For some users (1,2,3), the Face ID hardware on their iPhones was damaged even when there was no physical damage to the devices. In such cases, Apple will offer to repair or replace the Face ID sensors on the devices and if that doesn’t work, they’ll provide you with a new iPhone as long as your device is covered under Apple Care. 

If none of the above fixes helped solve your Face ID issue, you can take your iPhone to Apple Service to check what the problem is and get it fixed. 

That’s all you need to know about fixing Face ID not working on your iPhone. 


Face Id Not Working? Try These Fixes For Your Iphone Or Ipad

Face ID Not Working? Try These Fixes For Your iPhone or iPad

Also Read: How to secure Google Drive with Face ID or Touch ID

Top Fixes For Face ID Not Working

Before you begin to fix “Face ID not working” make sure:

2. The phone’s camera is completely clean and there is no fog on the screen.

3. Your phone’s screen is working properly, it is not frozen.

5. You have removed your mask to unlock your phone.

6. You haven’t entered the wrong passcode multiple times.

7. Your device might have received a remote lock command.

8. After checking the above list, let’s see top quick fixes for Face ID stopped working:

9. First of all, you need to enter your passcode so that we can have a look inside your phone.

⮚  Checking your Face ID Settings

Your phone’s face ID feature might not work properly if you have not set up the Face ID set up. To check your Face ID setting, follow the below steps:

1. Go to settings.

2. Tap on Face ID & Passcode

3. Enter your passcode.

If you’re able to find the “Set Up Face ID” option quoted in blue letters, you might have reached the major cause. If in case, you have never Set Up Face ID, you will need to set your Face ID settings. Also, make sure your Face ID is enabled.

⮚  Checking for updates

Make sure that your phone is updated with the latest version. To check updates, follow:

Go to settings.

Tap on General

Tap on Software Update

⮚  Restarting your device

If you’re still unable to unlock your phone with Face ID, restart your phone and enter your passcode. Now, go to settings and check all the settings. Now, try to use Face ID again.

Also Read: What to do if the iPhone screen went black?

⮚  Using Face ID with a mask

Due to the coronavirus pandemic, we all wear masks and it creates a mess while trying to unlock the phone. Trying to access your iPhone while your Mask is on, do this repeatedly could prompt for a passcode and that can be irritating, especially when you are in a hurry.

So whenever you need to unlock your iPhone, remove your mask and then try to unlock your device.

Don’t want to do that every time you want to access your phone? Don’t worry, there is a solution, not a direct one but it works and lets you unlock your iPhone even with a mask on.

To set up your iPhone’s biometric system while wearing a mask. Here’s how you can set up a face ID with a mask:

Go to settings.

Tap on Face ID & Passcode.

Now, tap on Reset Face ID.

After this, tap on Set Up Face ID.

Now, fold your mask and bring it up (just cover one side (as shown in the image below).

If you are getting a “Face Obstructed” message on the screen, you need to slowly move your mask towards the side of your face. After a few seconds, you will be able to see a message “Move your head slowly to complete the circle” request on your screen.

You need to complete two scans of your face, by folding the mask in the same way.

Now, Face ID is ready to work. Now, try to unlock your iPhone or iPad by using Face ID with a mask.

Related Read: Top Face recognition Apps for iOS and Android

In case the Face ID is not working with a folded mask method, then you must set up Alternate Appearance. To set up an Alternate Appearance, follow the below steps:

Go to settings and tap on Face ID & Passcode.

Now, tap on “Set Up Alternate Appearance.”

Then, fold your mask again as described in the above section. Now, cover the other side.

Complete the FaceID setup scan.

Once done, use your mask to cover your whole face to check if the trick works for you.

Once you’re finished, try to unlock the phone with the alternate appearance way and your FaceID should work with/without a mask.

Also Read: iPhone Gone Slower After iOS 14 Update? Make it function smoothly with these tips

I hope this blog helps you to fix the “Face ID not working” issue for your iPhone or iPad. Comment down and let us know if you face any issues during the process. For more such tech-related content, follow Tweak Library on all social media platforms.

Thanks for reading.

Next Readings:

How to Reset iPhone or iPad Passcode

Best Alternatives Of FaceTime App for Android

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Aayushi Kapoor

New Lawsuit Takes Issue With Apple’s ‘Brilliantly Scratch

Apple is facing a lawsuit over its marketing for the Apple Watch. While the company markets the device as “brilliantly scratch-resistant,” an Ontario man is taking issue with that as he claims the device is actually very susceptible to scratches and tarnishes…

As reported by iPhone in Canada, 21-year old Dean Lubaki first purchased his Apple Watch last September. He purchased the 42mm ceramic Edition model with a Milanese Loop.

Lubaki says his issues stem from the fact that the magnet on the back of the Apple Watch attracts the magnetic part of the Milanese Loop, causing scratches on the body of the device:

“The fact that the back of the Apple Watch attracts the Loop and creates abrasion without action for the consumer is a design flaw. Same abrasion can occur on the screen when the strap is removed to change straps. Again, nowhere Apple says that the loop may damage the watch.”

Lubaki says he tried to request a replacement at his local Apple Store, but was denied despite having purchased AppleCare. Once that happened, he started the process of going after Apple in small claims court, seeking a refund for his Apple Watch Edition and AppleCare+ purchases, as well as “additional compensatory and punitive damages.”

As for compensatory damages, Lubaki is seeking damages for “mental stress, and expenses that occurred because of the case in addition to the time of my life wasted that I will never get back.”

Furthermore, in terms of punitive damages, he says “Apple should not get away with lying to customers on website by falsely claiming that a product ‘won’t scratch’,” nor “lying to customers to their face and in store.”

Once he filed his small claims cases, Lubaki was contacted by Apple, who offered to replace his Apple Watch Edition and give him a free accessory. He declined this offer as he would prefer to “represent himself in small claims court.” We’ll have to wait and see to find out how that goes for him.

Update: Lubaki has issued a statement to 9to5Mac on the matter:

Apple has contradictory statements on its website about the Apple Watch Edition Series 3: Apple claims it is “Brilliantly scratch-resistant” but also later on the product page, states that it has “a refined finish that won’t scratch or tarnish.”

There is no clarity on what part of the said watch are resistant or won’t scratch or tarnish.

In addition to that, Apple sells the black Milanese Loop, that has “An additional diamond-like carbon (DLC) layer” and will damage the watch because of the DLC.

I was insulted by the way the Apple Store Yorkdale staff treated me, a long time Apple customer, and by the way Apple ignored my official complaint.

It is only after I filed a Plaintiff’s Claim with the court that a Customer Relationship person contacted me to offer to replace the watch and give me a free accessory, to add insult to injury. Apple had many opportunities before I officially filed to do the right thing.

Subscribe to 9to5Mac on YouTube for more Apple news:

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How Charts Works Inwith Examples?

Introduction to chúng tôi charts

Charts are used to show the data in the forms of visual which makes them look attractive. We have different types of charts available in chúng tôi which can be used to show data in visual format. We have different type of chart in Vue like pie, line, bar and many more we can also modify this chart according to requirement. This increases the visibility of the data to user and make statistics easier to understand.

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mounted () { this.renderChart(data, options) }

In order to use this we need to import the Chart by the name form Vue-charts library, now we will just see how we can define the chart into our program to make the data visualize.

How do charts work in Vue.js?

As now we know that charts makes our data to look more user friendly and make it easier to understand. It helps to protect our data and all the calculation or we can say an approx. value for the variable in more convenient way. We can use this charts on our dashboard of our application where all the data and statistics of the application are shown. By using this charts we can show day to-day, moth to month as well as year to year data in more under stable form. We can also change the color of the charts, font and make them more interactive by using the various function available in chúng tôi chart library.

In order to use the chart library into chúng tôi program we need to install some files before using them.

Let’s see the steps which need to be taken in order to use this:

1. Here we are using vue-chart js library we also have so many other options available but for now we are using this. So first step is to install this library we can do this by using npm or yarn.

Open your command prompt and run the below command using npm option, this will install the dependence of vue-chartjs and chúng tôi as well.

npm install vue-chartjs chart.js

2. After this we can import this library into our js file and use their charts available and modify them. In order to import them we need to write one import statement into our file.


import { your_class_name } from 'vue-chartjs'

3. Before this we will include some files into our application these are the .js files which is required to import before even start.



This files can be import by using the script tag and mentioned their path as well by using the src attribute.


4. All the different chart available inside the chúng tôi and to make them feasible we have vue-chartjs to use them. We can mention the name of the chart and import them in our js file.

Examples of chúng tôi charts

Given below are the examples of chúng tôi charts:

Example #1

In this example we are creating line chart using the chart,js with chúng tôi and trying to show the data of student. Using different function here and also creating the dataset t mount our data on chart.

HTML File Code:

Js File Code:

extends: VueChartJs.Line, mounted () { this.renderChart({ labels: [‘Amit’, ‘Suimt’, ‘AmBita’, ‘Vinta’, ‘Aman’, ‘Ankit’, ‘Itisha’, ‘Latika’], datasets: [ { label: ‘Set one’, backgroundColor: ‘#f87979’, data: [5, 8, 2, 15, 30, 15, 30 , 20] }, { label: ‘Set two’, backgroundColor: ‘#ccffcc’, data: [10, 5, 20, 15, 30, 25, 40 , 35] } ] }, {responsive: true, maintainAspectRatio: false}) } }) var vm = new Vue({ el: ‘.demoapp’, data: { message: ‘Line chart in Vue Js’ } })


Example #2

In this example, we are creating a bar graph using chúng tôi with chúng tôi and trying to show the student data.

HTML File Code:

extends: VueChartJs.Bar, mounted () { this.renderChart({ labels: [‘Amit’, ‘Suimt’, ‘AmBita’, ‘Vinta’, ‘Aman’, ‘Ankit’, ‘Itisha’, ‘Latika’], datasets: [ { label: ‘Set one’, backgroundColor: ‘#f87979’, data: [5, 8, 2, 15, 30, 15, 30 , 20] }, { label: ‘Set two’, backgroundColor: ‘#ccffcc’, data: [10, 5, 20, 15, 30, 25, 40 , 35] }, { label: ‘Set three’, backgroundColor: ‘#ffb3d1’, data: [10, 5, 20, 15, 30, 25, 40 , 35] } ] }, {responsive: true, maintainAspectRatio: false}) } }) var vm = new Vue({ el: ‘.demoapp’, data: { message: ‘Bar chart in Vue Js Demo’ } })


Example #3

In this example we are trying to create pie chart by using the chúng tôi with chúng tôi to show the data of student here. Also we have used to dataset object to mount our data into the chart using different colors.

HTML File Code:

Js File Code:

extends: VueChartJs.Pie, mounted () { this.renderChart({ labels: [‘Amit’, ‘Suimt’, ‘AmBita’, ‘Vinta’, ‘Aman’, ‘Ankit’, ‘Itisha’, ‘Latika’], datasets: [ { label: ‘Set one’, backgroundColor: ‘#f87979’, data: [5, 8, 2, 15, 30, 15, 30 , 20] }, { label: ‘Set two’, backgroundColor: ‘#ccffcc’, data: [10, 5, 20, 15, 30, 25, 40 , 35] }, { label: ‘Set three’, backgroundColor: ‘#ffb3d1’, data: [10, 5, 20, 15, 30, 25, 40 , 35] } ] }, {responsive: true, maintainAspectRatio: false}) } }) var vm = new Vue({ el: ‘.demoapp’, data: { message: ‘Pie chart in Vue Js Demo’ } })



The chart are used to provide the effective representation of data to the user so that they can easily understand the statistics of data. Moreover this charts are used on the dashboard of application to look it more interactive. They help us to visualize the data easily.

Recommended Articles

This is a guide to chúng tôi charts. Here we discuss the introduction, syntax, and working of charts in chúng tôi along with examples and code implementation. You may also have a look at the following articles to learn more –

How To Change Your Apple Watch Face

Last Updated on May 15, 2023

Apple watches are great devices. You can access heart rate information, notifications, and even estimated blood oxygen levels all from your wrist! 

There are a variety of versions to choose from. The most recent Apple Watch is the series 7 model, which claims to have a larger display, better charging time, and more durability. 

One of the best things about the watches is that they are pretty customizable, so you can choose your own Apple watch face and change them whenever you want – from both your iPhone and the watch itself.

This article will show you all the different ways you can change the watch face on your Apple Watch. 

How To Change The Watch Face On Your Apple Watch

Switching to different watch faces from your Apple Watch is very simple.



Swipe Left Or Right

All you need to do is swipe left or right from each side, and you will see the different watch face options that you have previously added to the watch. 



Swipe To Center

Once you have found the one you want to switch to, you don’t have to do anything else. Just swipe it to the center and that’ll be your new watch face!

How To Customize The Watch Face On Your Apple Watch

Another great thing about these little devices is that you can actually customize the watch face on the watch itself!




Once you have selected the face you would like, tap on it and select ‘Edit’. You will then be able to select an array of feature options. You can change the color or markings of certain faces.



Press Down

You can do this by tapping to select a change, and then using the digital crown to change it. Once you are happy with the changes, press down on the digital crown and the changes will be saved. 

How To Delete A Watch Face From Your Apple Watch

While knowing how to add and change watch faces from your Apple Watch is essential, knowing how to delete them is equally important.



Swipe Left And Right

As you would do to select a watch face, swipe left and right until you reach the face you would like to delete.

Simply swipe up, and you will see an option that says ‘Remove’. Tap this, and that selected watch face should be removed. 

How To Add A Watch Face From Your iPhone

If making all these changes on the small face of your Apple Watch is a little too fiddly for your liking, then you can do them all directly from your iPhone!



Face Gallery

Simply go to the Watch app on your phone, and go to the ‘Face Gallery’ that is located at the bottom. Here, you can search through the different watch faces that are available.

Once you have found the one you’d like to include in your collection, you can press ‘Add’.




You can also customize different watch faces from your iPhone. Once you have selected a watch face, you can choose from a variety of different colors, styles, and complications.




Once you are happy with your edits, tap on ‘Add’, and your new watch face will be added to your Apple Watch.




If you would like to remove a watch face using your iPhone, just select the face you want to get rid of, and at the bottom of the screen you should see an option that says ‘Remove’.

Tap on this, and the watch face will be removed from the collection.

Final Thoughts 

Apple watches are great – even better when just how you want them to be to match your own style – and as mentioned there are a variety of models to choose from.

If you are an iPhone user, having an Apple Watch will enable you to access a variety of features including fitness and health tracking. It will also give you the convenience of seeing messages, calls and notifications right on your wrist. All on a watch face which can reflect your own personality or practical needs.

Update the detailed information about How Apple’s New Face Id Works on the website. We hope the article's content will meet your needs, and we will regularly update the information to provide you with the fastest and most accurate information. Have a great day!