IR cameras are how eye tracking works. They are going to know when your eye travels to advertisements. That will be part of the cover story.
More importantly, they're going to know when you read propaganda. The 3d mapping will also watch your face for micro-expressions -- the same stuff body language experts look for -- to predict how credible you regard the source. Your phone will now know if you are an NPC or someone the feds need to pay attention to as a domestic terrorist who doesn't swallow official horseshit.
If I had to guess, it is either because:
Big Daddy government is telling them to do so.
It's basically free data so Apple will find a way to make money from it OR save costs for their more data-intensive projects.
IR cameras are how eye tracking works. They are going to know when your eye travels to advertisements. That will be part of the cover story.
More importantly, they're going to know when you read propaganda. The 3d mapping will also watch your face for micro-expressions -- the same stuff body language experts look for -- to predict how credible you regard the source. Your phone will now know if you are an NPC or someone the feds need to pay attention to as a domestic terrorist who doesn't swallow official horseshit.
That's the most charitable take possible.