Encrypt It for

From Handbytes:

Encrypt It enables you to keep all your confidential and sensitive information safe and secure in a single database protected by passwords and state-of-the-art encryption.

Your credit card numbers, PINs, banking information, and passwords are already protected in Private Records, right? Wrong! If you were to lose your PDA, all someone would need in order to be able to read your sensitive information is a HotSync cable, computer, and text editor software. They do not even need to know your password if you use one to unlock your PDA when you power on. And face it, masking and hiding Private Records is inconvenient too, as you cannot see what you have masked or hidden.You need Encrypt It, the leading security software for Palm OS PDAs. Features include:

• State-of-the-art 128-bit AES encryption.
• User-defined master password up to 20 characters.
• Each Encrypt It record can have 20 fields, with user-defined names for ultimate flexibility.
• Option to protect individual records with another password for ultimate security.
• Mark individual or all records as read-only to avoid accidental data loss.
• Import from/Export to native Memo Pad application.
• User-defined folders for flexible record organization.
• Powerful Search function to find records quickly.
• Auto timeout feature to turn off the tool.
• Self-destruct feature wipes the Encrypt It database after a number of incorrect master password entry attempts.