We found some nice tutorial videos on the net, on how to use the Face and Voice Recognition on the Sony PlayStation 4 System.
Watch the Video above, and the videos below.
The C-Note Files – Episode 13: Tutorial – PS4 Voice Recognition
Bonus: The C-Note Files – Episode 5: Tutorial – PS4 & Vita Sync
Official Source: http://www.youtube.com/watch?v=e9nsFAFedrY