Yes. And automatically log in to the right user account on shared Macs.
In the keynote they mentioned that Touch ID would switch user profiles, so I think this is coming too.
They could even use it for the screen saver/auto lock functionality so the computer doesn’t lock because I am staring at code for 5 minutes.
Hopefully it'll be on the larger model.
I think they may segment it as "iMac Pro"
eh FaceID is more like a software feature rather than hardware, even a basic windows laptop these days have it
They have facial recognition, but Face ID involves a complicated array of sensors and an IR projector to create a 3D mapping of your face. Iirc, the module is fairly expensive to produce which is why we aren’t seeing it on more products.