Sony PEG-NZ90 - Manual (Page 168)

Protecting your data with a password 168
Locking your CLIÉ handheld with a password (Data protection)
3
Rotate the Jog Dial™ navigator to select Security and press
the Jog Dial™ navigator, on the Application Launcher
screen.
The Security screen is displayed.
Tip
You can also tap the Security icon to display the Security screen.
4
Tap Lock & Turn OFF.
The System Lockout screen is displayed.
5
Tap Off & Lock.
Your CLIÉ handheld turns off and locks.
To start your CLIÉ handheld, you must enter the correct password.