How does the Face ID work in iPhone X?

By Agency Published on Oct 03, 2017 03:47 PM IST

With their new launch, iPhone X, Apple unveiled its new Face ID facial recognition system.

The system lets users unlock their phones just by glancing at them. How does the recognition work and what else does the new unlocking feature hold for its customers.

Face ID captures a 3-D and 2-D image of your face using infrared light while you are looking straight at the camera. Apple then compares that information to images you took while setting up Face ID; that comparison is done using a neural network that lives on the iPhone X’s new A11 chip.

Five unsuccessful attempts and the device will force you to enter a passcode.


While Face ID won’t face for a real test with ordinary users until November, Apple says it should work just fine.

And when reviewers checked the devices, it worked really well. For people who think that the company might save your face in the network, relax, the face ain’t leaving your device.

The iPhone X will store representations of your face in its secure enclave, a hardware-based enclosure designed to be resistant to spying and tampering. The iPhone X allows third-party apps to let you sign in via Face ID, but these outside developers only receive notifications from Apple that you have been authenticated or not.

"Other apps cannot access Face ID or the data associated with the enrolled face," the company says. So, what happens when we change our outlook? Apple says its algorithms learn to adapt to appearance changes over time. The system keeps recent images and uses them to allow unlocking if they are close enough to the registered image.