Engadget is reporting that you will be able to use the PS4 camera to log in to your PlayStation 4, at launch.
Division President of Business Division 1 at Sony Computer Entertainment Masayasu Ito also gave this update on voice control:
“Game titles could be called in and then the game could start. That’s as far as it goes, but continuous updates, it can go deeper. Make it with greater depth. With face recognition, we think about how that could be used in the context of the game.”