On Tuesday (March 15), local time in the United States, Apple released the latest version of the iPhone operating system ios 15.4, and it is already available for download. It is worth mentioning that iOS 15.4 was released at the same time as iPad OS 15.4 and macOS Monterey 12.3, bringing new features, bug fixes and performance improvements to products such as iPhone, iPad and Mac.
The iOS update includes a number of new features that have been re-upgraded, such as the ability to unlock your phone with Face ID while wearing a mask. There are also other improvements, such as the addition of more new emojis.
During the COVID-19 pandemic, masks made Face ID unusable, so Apple built an option in iOS 15.4 to use Face ID when wearing a mask. The new Face ID settings are only available on iPhone, and users can choose between two versions of Face ID certification.
The new interface prompts users to wear glasses during setup and installation to improve accuracy. In short, Face ID does a good job of recognizing faces even when the nose and mouth are covered by a mask, but it still can't be used with glasses, sunglasses, and a soft hat.
Apple has warned that since this facial authentication only scans facial features around the eyes, the accuracy of this method will be reduced because fewer facial features are used for biometrics. This is different from the standard scanning method, which examines the user's entire face. In addition, Apple also said that when unlocking, users need to keep an eye on it, rather than performing a face scan.
It's worth mentioning that this feature is only available in iOS 15.4, and it's only available on iPhone models with a TrueDepth camera. iOS 15.4 will work with all iOS 15-compatible devices, which means that all devices above the iPhone 6S and iPhone 6s can run.