LG G3 User Manual page 183

Settings
181
Hidden pattern: Checkmark to display the unlock dot pattern when (and
where) you tap the Lock screen.
Make pattern visible: Checkmark to make your pattern visible while
drawing it.
Hidden PIN: Checkmark to display the keypad when you tap the Lock
screen.
Random PIN entry: Sets the keypad to random numbers so that
someone watching cannot detect your PIN from your hand movements.
Hidden password: Checkmark to display the keyboard when you tap the
Lock screen.
Improve face matching: Sets a more precise detection for face
matching.
Liveness check: Checkmark to require you to blink during face matching
detection (to guard against using a photo of you).
Gestures
Answer an incoming call: Checkmark to enable you to bring the phone
to your ear to automatically answer the incoming call.
Fade out ringtone: Checkmark to enable you to pick up the phone from
a flat surface to fade out the incoming call ringtone.
Silence incoming calls: Checkmark to enable you to flip the phone to
silence the incoming call ringtone.
Snooze or stop alarm: Checkmark to enable you to simply flip the phone
to snooze or stop the alarm.
Pause video: Checkmark to enable you to simply flip the phone to pause
the currently playing video.
Help: Opens a help guide on how to use the Gestures features of your
device.
SENSOR
Motion sensor calibration: Allows you to improve the accuracy of the tilt
and speed of the sensor.