I was talking about this prior to the release of the phone. How it will become a major problem for Apple designing a system that requires so many hardware components to work together. One of those components is very likely to eventually fail and so it brings us to today. It seems there are now many reports popping up of "FaceID not available" which is just another way of saying one of those components has failed. Due to the manufacturing process, this is not unexpected but it is astonishing that it is starting to happen only 6 months after the phone's initial release.