Rohos Mini Drive
FREE USB flash drive encryption tool. Creates hidden and protected partition on the USB flash drive memory. You work with the files on the hidden volume without opening special program. Those who have Megabytes of sensitive files on the USB drive and seriously concerned with data security, cannot imagine their USB stick without the hidden volume that is created using this tool.

It doesn’t require Administrator Privileges to open password protected USB drive partition!

Easy to setup, easy to use and Free!

http://www.rohos.com/products/rohos-mini-drive/