What happens if a cop forces you to unlock your iPhone X with your face?
https://www.washingtonpost.com/news/the-switch/wp/2017/09/13/what-happens-if-a-cop-forces-you-to-unlock-your-iphone-x-with-your-face/
The introduction of Face ID instantly led to questions among civil liberties experts, who say the technology raises the risk of abuse.