2D vs 3D Facial Recognition to Unlock. Almost every smartphone produced via OEMs may now unlock by recognizing matching specific features.
Thanks to Apple’s iPhone X, Face Unlock became a smartphone ecosystem. Nearly every smartphone via OEMs may now be unlocked by recognizing and matching specific facet features of the user with biometric security of authentication.
Yet, while Face Unlock is an essential feature and selling point used by many manufacturers to appeal to customers. Many Smartphone users are unaware that face unlocking technology is available in several forms, and of course, it varies in style and safety.
So, 2D vs 3D Facial Recognition, two popular forms of face-up techs get highlighted by the use, production, and functioning.
Face Unlock 3D Scanning
Apple pioneered this form of Face Unlock and has been borrowed from many OEMs ever since then. 3-D facial exposure scanning utilizes your smartphone’s front-facing camera along with a few sensors to build your “3D Depth Map.” For example, a TrueDepth camera system has an infrared (IR) camera, dot lighting, and floodlights. Further, generates a 3D depth map of a face user using a matrix of 30,000 points.
They use these thirty thousand point dots to set up a unique 3D model/image that will be for future unlocking. The more dots the safer. And the more exact the Face Unlock system is, the harder it is to fool/unlock your phone with a photo.
The more, the safer
Apple looks to be still with more than 30,000 points. Because it’s the safest face unlocking system. Mate 20 and Mate 20 Pro, both for Huawei. Xiaomi also analyzes up to 33,000 specific points on a user’s face (on the Mi 8 Explorer Edition). On the other hand, Oppos utilizes half of Apple & Huawei’s (15,000) points, while Vivo identifies and saves just a thousand points on the user’s face.
2D unlock
For 2D Face Unlock devices, they compose the authentication process of one Infrared and an Infrared lightning device (IR emitter). The main distinction is the lack of a dot projection device for producing 3D depth maps.
The front or IR camera of the smartphone used for 2D unlock to record a normal user image and to save the image as a reference point. So, the gadget scans your face and compares the recorded 2D pictures after the following release. It gives the user access to the gadget if photos are close enough. When the IR lights your face in a dark area, the IR lighter/emitter may identify the user.
While the identification of face images using 2D image sensors is much quicker than 3D unlocking, they are less safe. A printed photo, a user video, or by an unconnected person who looks almost like you may trick A 2D Unlock. Unlike 3D scanning, face unlocks. They have reported some popular flagships to be unlocated due to the 2D Face Unlocking mechanism (e.g. the Xiaomi Pocophone F1).
Recently, the Samsung Galaxy S10 is responsible for a broken 2D Face Unlock System. For weeks now, a video showing the Galaxy S10 unlocked by a user’s video is available online.
