Palm TUNGSTEN T2 - Manual (Page 453)

Setting Personal Preferences
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5. Tap the check box for Encrypt data when locked.
6. Tap the Choose Applications button.
7. Select the applications whose data you want to encrypt and tap OK.
8. If you want to encrypt only private records, select Encrypt private records only.
9. Tap the Encryption type pick list and select a type.
10. Tap OK.
Tap pick list and select Encryption
Select encryption type