Yes, really. I don't listen to technical podcasts, and I haven't seen any Twitter or IRL stuff about it.
Anyway, if you want to have a shared phone like this, get one that has Touch ID. Apple offers both.
Or trust that Apple does this intelligently and doesn't train the facial recognition in this case when the face is too far out of bounds. As other commenters mentioned, I'm pretty sure that's how it works. It's not training based on your wife's face unless she looks a lot like you. And in that case, you want her to be able to unlock your phone, so isn't it a good thing?
Anyway, if you want to have a shared phone like this, get one that has Touch ID. Apple offers both.
Or trust that Apple does this intelligently and doesn't train the facial recognition in this case when the face is too far out of bounds. As other commenters mentioned, I'm pretty sure that's how it works. It's not training based on your wife's face unless she looks a lot like you. And in that case, you want her to be able to unlock your phone, so isn't it a good thing?