Samsung PL64E8000GFXZP - Manual (Page 394)

check whether a tape attached or not
in rear of the TV camera, and then you
can use a TV camera after adjust a
camera angle. When you don't want to
use a TV camera, we recommend to use
after a camera lens fixes to upwards. In
this case, Face recognition and Motion
Control are not available.
Voice Control
Menu
→
System
→
Voice and Motion
Control
→
Voice Control