Secure your lock screen
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Touch the time in the System bar, touch the time in the Status Details panel, and touch Settings at the bottom of the Quick Settings.
You can also open Settings by touching its icon in the Apps screen or on a Home screen (if you placed a shortcut to it there).
Touch Location and security.
Touch Configure lock screen.
Touch Pattern, PIN, or Password.
If you touch Pattern, you’re guided to create a pattern you must draw to unlock the screen. The first time you do this, a short tutorial about creating an unlock pattern appears. Then you’re prompted to draw and redraw your own pattern.
If you touch PIN or Password, you’re prompted to set a numeric PIN or a password you must enter to unlock your screen.
The next time you turn on your tablet or wake up the screen, you must draw your unlock pattern or to enter your PIN or password to unlock it.
Home and Android basics
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