Samsung Galaxy S4 User Manual page 269

Face unlock options
Once Face unlock is enabled, additional options are
available:
• Lock screen widgets allows you to lock the widgets that are
displayed on your home screens.
• Improve facial recognition allows you to improve your
device's face matching capability by capturing your face in
different lighting, with or without glasses, and bearded or
clean-shaven. Follow the on-screen instructions.
• Presence check requires that you blink when using the Face
unlock feature. This will increase the security of the feature.
• Lock automatically locks the screen 5 seconds after the
screen turns off.
• Lock instantly with power key once enabled, instantly locks
the screen after pressing the power key.
Using Face and Voice Unlock
This feature used facial recognition to unlock your phone.
This feature is less secure than PIN, Pattern, and Password
locks and can be bypassed by someone else who looks
similar to you.
1. From the main Settings page, tap My device tab
Lock screen.
2. Tap Screen lock
3. Read the on-screen notification and tap Next.
4. From the About Face Unlock screen, tap Set it up
Continue.
5. Follow the on-screen instructions.
6. Once prompted to speak and unlock command, tap
and repeat the phrase four times.
7. Once complete, tap Done.
Face and voice.
Changing Your Settings 262