While smartphone manufacturers are concerned with the practicality and ease of use of their devices, they must also pay attention to the safety of the devices. This line is becoming increasingly blurred with the advancement of biometric authentication technologies today, our information is a face away.
As for practicality, it is really very simple to get up and look at your smartphone in order to unlock it; in terms of safety, a test carried out by journalist Thomas Brewster (from Forbes), with a 3D printed head, showed some situations in which this technology may not be the most reliable.
To conduct the test, Brewster looked for a company that prints 3D molds in the UK. In one stadium, about 50 cameras recorded a specific angle of your face, and then software combined the photos to produce a complete 3D image used in making the mold.
The journalist then configured his ?real? face on five different devices: iPhone X, LG G7 ThinQ, Samsung S9, Samsung Note8 and OnePlus 6 and checked which one the 3D printed head was able to unlock the device on. Surprisingly (or not), the four Android devices were unlocked by the ?fake? face each with a different number of attempts. The fact that the only one that was not ?tricked? by the mold was the iPhone X.
The test does not offer a clear result as it does not compare devices with equivalent facial recognition technologies; on Android devices, even, this feature is not recommended by manufacturers as the primary authentication method, unlike the iPhone. The LG G7, for example, indicated that ?face recognition is a secondary unlocking method that results in less security on your phone.
It was also not informed whether the option ?Require Attention for Face ID? was enabled on the iPhone or not; thinking so, then the device failed to recognize the 3D mold as it provides an added level of security, as explained by Apple:
Face ID is also sensitive to attention. It recognizes whether the eyes are open and whether the attention is focused on the device. This makes it even more difficult for someone to unlock the device without you knowing it (if you are sleeping, for example).
In addition to the iPhone X, Microsoft's "Windows Hello" technology also did not recognize the 3D mold and therefore did not unlock the device. Check out the full test here.
tip from @SandersonBittencourt, via MacRumors