The Huawei Mate 20 Pro-face scan feature gets fooled by a couple of guys in Germany. Interestingly, only of the user was enrolled in the system. For your concerns, the Huawei Mate 20 Pro uses a 3D face unlocking mechanism, so in theory, its error rate should be around one in a million.
Also, these people were not twins or related to each other by any means. Well, these were two men with similar facial features or aesthetics. I’mean both these men had short hair and beards. Further, one has glasses put on its face, and the other person didn’t put the glasses. The same experiment was performed by these people on another unit, and boom they’re in the same position.
Lastly, we hope that the feature is not so widely widespread, and has no hardware issues.