What is Face ID and how does it work

Due to the accuracy and feasibility of the feature, many users may have doubts about what Face ID is and how it works — why it is so reliable and can guarantee the protection of the information contained in the devices.

What is FaceID

Face ID is Apple’s advanced technology for iPhone and iPad Pro authentication and security. Debuted in November 2017, with the presentation of the new iPhone X, it succeeded the line of iPhones that relied on the fingerprint sensor as the main method of biometrics.

Today, Face ID still remains the main and most advanced method of biometrics in the smartphone market, ensuring biometric authentication with greater security and intuitiveness than predecessor technologies. In addition to unlocking the device, Apple’s facial recognition can also authenticate Apple Pay purchases, in addition to downloading and signing apps from the App Store.

How does FaceID work?

At first glance, it may seem strange and uncomfortable to use an iPhone with a huge notch at the top of the screen. The reason is simple to explain, but it involves a great deal of engineering behind the scenes: the TrueDepth camera system. He is responsible for the operation of Face ID. Its role is to accurately map the face geometry and because of this, it needs to occupy a larger part of the screen than compared to a regular selfie camera.

To better understand the magic of TrueDepth, its advanced technology – which integrates hardware and software – accurately reads face data and projects thousands of invisible points to develop a depth map, as well as enhancing its accuracy with an image. face infrared. This definitely prevents a simple photo from unlocking your iPhone or iPad Pro.

This feature is possible thanks to part of the Neural Engine, present in the A11, A12 Bionic, A12X Bionic, A13 Bionic, A14 Bionic, and A15 Bionic chips and protected by the Secure Enclave. Thus, the depth map and infrared image can be quickly calculated for data comparison.

The intelligence of the feature is such that Face ID can adapt to changes in a person’s phenotype, that is, even if you wear makeup or grow a beard, you can still use facial recognition. Also, if there is another type of sudden change in the face, just use the unlock code to confirm the identity, and Face ID will update the data.

And there’s no problem if the user is in a bright or dark environment, and still wears a hat, scarf, glasses, contact lenses, or other similar accessories on their face, Face ID can still recognize them and authenticate the data. . One of the only counterpoints is the use of a mask, which has already been resolved with the iPhone 12 (or later) updated from the iOS 15.4 system.

Can you bypass Face ID?

With the numerous attempts to copy Apple’s features on competing smartphones, the consumer may be suspicious about the safety of the original feature itself. After all, would an ordinary person be able to bypass Face ID using a photo or other similar resource?

The answer is no. There is no way for an ordinary person to use alternative methods to trick Face ID and access user information. This is not to say that the technology is foolproof, some studies have already shown that it is possible to bypass biometrics and unlock the device. However, ordinary people need not worry, in general, the chances of it happening to ordinary people are slim.

How to set up Face ID

To get started with Face ID on iPhone or iPad Pro, you need to register your face on the device. To do this, follow the steps below:

  1. Open the Settings app. Then tap on “Face ID & Code”;
  2. Enter the device unlock code;
  3. Tap “Set up Face ID”;
  4. Position your face in front of the device’s camera to set up your Face ID. The feature needs to see your eyes, with an arm’s reach distance of 25-50 cm from the face.

After registering your face to Face ID, you can start using it on your Apple device. You must use the feature to unlock your iPhone or iPad Pro, authenticate purchases from the App Store, and iTunes Store, and confirm the use of a credit or debit card in Apple Pay.

If you are experiencing issues with facial recognition on your device, please visit our guide on how to fix Face ID issues or contact Apple Support.

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