1. From the home screen, press the Menu key.
   
2. Tap Lock screen settings.
   
3. Tap Select screen lock.
   
4. Tap the desired screen lock method.
   Note: For this demonstration, 'Knock Code' was chosen.
   
5. Tap Next.
   
6. Enter the desired knock code.
   
7. Tap Continue.
   
8. Re-enter the desired knock code.
   
9. Tap Confirm.
   
10. Tap Next.
    
11. Enter the desired backup PIN, then tap Continue.
    
12. Re-enter the desired backup PIN, then tap OK.
    
13. Knock Code is now set.
    
14. To use the knock code, while the display is off or at the lock screen, tap the knock code sequence in the designated area.