Samsung UN60ES7500FXZA - Manual (Page 468)

it will log you into your Samsung
account automatically.
N If the TV recognizes two or more
registered faces, the Samsung
account list appears. Select your
account to log in.
N If your face is unregistered, you
can register your face in your
Samsung account. Follow steps 6
through 7 in the “To register your
face to your Samsung account:”