Palm Tungsten T3 Handbook page 354

Chapter 21 Setting Preferences for Your Handheld
You can set your handheld to lock automatically when any one of the following
occurs:
When you turn off the power
At a time you specify
After a period of inactivity you specify
To set your handheld to lock when you turn it off:
From the General Preferences list, select Security.
1.
Tap the Auto Lock Handheld box, enter your password, and then tap OK.
2.
Select On power off.
3.
Tap OK, and then tap Done.
4.
To set your handheld to lock at a preset time:
From the General Preferences list, select Security.
1.
Tap the Auto Lock Handheld box, enter your password, and then tap OK.
2.
Select At a preset time, and then use the arrows to set the time.
3.
Tap OK, and then tap Done.
4.
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