Identical twin looks at your X to unlock it. A stranger quickly grabs your phone without you even realising it and puts it in front of your face and runs off. You’re at dinner with your other half, you’ve got your X on the table and because you keep looking at it, it’s always unlocking, and as it unlocks for the 47th time, you get a notification and your nosey other half quickly picks it up and swipes up to check it out. You’re in bed asleep, you wake up in the middle of the night and accidentally look at your phone which unlocks it, and as you roll over to go back to sleep, your one night stand gets out of bed and quickly tip toes to your side of the bed to stalk what’s inside your phone. Now some of you will say these are all extreme examples, but Apple has made a big deal about how water tight Face ID will be. Apple may have perfected Face ID to such an extent that it probably will be more secure than touch ID in terms of trying to knock down the wall, we don't know yet, but testing it in labs is different to real world use where the different permutations for fail are so much greater. And some of these permutations are not even a thing yet. Will Face ID discriminate between an intentional look and an unintentional look? Who knows, but I’m tipping it’s not that sophisticated to be able to differentiate between the two. Face ID will rely on the user looking at the sensor, intentionally or not, whereas touch ID relies on a press of your unique finger print. If you’re the sort of person who doesn’t like people browsing through your phone, then touch ID is perfect. You can leave it lying around,you can walk off, and no one can get in. In the 4 years that touch ID has been part of the iPhone, I have not heard or read one reported incident of someone accessing someone else’s iPhone because of a touch id fail. Not one. That is phenomenal. Yet Apple decided to fix something that wasn’t broken, not just unbroken, but close to being as perfect as you can get. Or maybe they weren’t trying to fix anything, maybe they couldn’t get the technology that they really wanted: touch id under the screen. I said in an OP of mine last week not to underestimate how much you will be forced to change habits. The above examples won’t scare people off face id, which is not my intention anyway, but they demonstrate how you will be forced to change some of your habits. And if you successfully change habits, then all well and good, but don’t slip up, because one slip up is all that it will take. I anticipate that Face ID fail paranoia will be the new dropping your phone paranoia. With touch id, it was virtually impossible to slip up. Here’s a couple more examples. You’re having drinks with friends. You’re a little bit drunk so you’re not thinking properly. You get up to go get another drink, as you get up, you look at your phone and without realising it, it unlocks, only for you to come back and see your friends ‘hacking’ your Facebook account, or whatever. And this applies to any situation where you leave your phone for a moment. You’re in hospital recovering from an operation. Your friends who love to annoy you unexpectedly pay you a visit. Before you even realise what's going on, one of them grabs your X from the side table and shoves it in your face, causing the X to unlock. Of course you can’t chase the friend because your leg is in a cast, all the while all your friends are playing with your phone, reading your messages, or whatever, just to annoy you. The possibilities of these types of fail are endless. Endless! While alot of you are counting down the days to the X hitting the stores, even as I type this, criminal gangs are probably devising new methods of how to go about unlocking your X right in front of your face. And they’re probably rubbing their hands with glee at the prospect. Face ID more secure than touch ID??? I think not.