Lenovo Yoga 10 User Manual page 22

After you have set and activated the pattern unlock function, the unlock
keypad will be displayed whenever the display is to be unlocked. Use your
finger to trace your preset pattern on the keypad. After the preset pattern
has been correctly entered, the screen will be unlocked.
Tap Face Unlock to use your face to unlock the display.
Tap PIN to input the PIN code (minimum 4 digits) you will use to unlock the
display.
Tap Password to input the password (minimum 4 characters) you will use
to unlock the display.
PASSWORDS: Under this option, you can decide whether or not your chosen password
will be visible when you input it. If the check box is selected, then the password will be
visible. If it is not selected, then your password will only be displayed as **** when
you input it, thereby keeping your password more secure.
DEVICE ADMINISTRATION: Set to administrate your tablet and allow installation of
non-market apps.
Device administrators: These functions are not available to ordinary users. Only
TsingMail users who have previously set up the appropriate security settings
within their organizations can use these functions.
These features work in conjunction with the Enterprise Policy Center (Lenovo