Handling a smart phone is already stressful enough. You can't touch the entire front of phone in fear of accidentally tapping something, even if the screen is off because it might turn on at any moment. With tap to wake you have to worry about just bumping it and with facial expressions you'd literally need to be concerned about just looking at it funny.
Not really - there's a reason why the Android phones that have tap to wake require two taps in quick succession, or similar. It's very difficult to accidentally trigger it. The facial recognition stuff seems odd to me, in the sense that I can't really figure out what it would be used for (aside from a silly smile detector in the camera app), but hopefully it'll be locked behind permission prompts (or barely accessibl…
I was skeptical, but I have a friend who has a similar thing running on his Windows box and it works surprisingly well.