iPhone X: Is Apple really building a huge database of people's faces? What does Face ID actually do?

Apple is scanning people's millions of people's faces each day, shooting lights at them and taking photographs. And it's got everyone in a panic. The new Face ID technology in the iPhone X has led some people to be worried that the company is secretly assembling a database of the most detailed selfies ever to be taken. But the truth is much more secure and private, and probably a little less exciting. It's Apple's brand new biometric technology, which uses very precise measurements of your face to check that the person trying to get into a phone is its actual owner.