https://www.theverge.com/2017/11/14/16650394/10-year-old-unlock-mom-iphone-face-id

Since the iPhone X has hit the market, people have been trying all sorts of ways to trick the phone’s Face ID feature, including this creepy, cobbled-together mask. While Apple has admitted that false positives can happen, it was thought this could only happen with twins, or siblings under the age of 13. However, a new video has popped up showing a 10-year-old unlocking his mother’s iPhone, suggesting that any family members who bear enough resemblance might be able to bypass the system.

In the video, the mother explains that despite setting up Face ID for her face, her son is able to unlock the phone using his face. A Wired report on the video notes that the son was able to do this upon picking up the phone for the first time. The son was also able to unlock his father’s phone, but only in one instance.