I'm the person who posted item #4 above. I just went to the Lexar web site and got the answer to my own question. The answer (copied from the Lexar web site) is below.
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SECURITY
* Create password-protected and public areas on the JumpDrive. This allows users to easily share files, and at the same time prevent access to sensitive or private information.
o Public area has no password protection and is accessible by anyone using the JumpDrive.
o Private area is password-protected so no one can open, copy or write files to the drive without entering the correct password.
* For additional security encrypt and decrypt any file on your computer or JumpDrive using AES 256-bit encryption.