To play devils advocate here... Apple says the new Face ID technology built into iPhone x is much more secure than using a fingerprint. The chances of someone being able to pick up your phone and unlock it with their face (hehe, that just sounds funny) is 1,000,000 to 1.
I believe them, but what do you think? Will there be any way for people to get around it?
I think it would be secure enough, but not from someone who forces you to look at the device to unlock it or pay for something.