Even if the files you store on your USB stick are probably only valuable to you, you may feel better about storing them on something like the Lok-It Numeric Flash Drive.
This high-security computer peripheral avoids the problems that other protected thumbdrives fall subject to, because the PIN that you have to input to render the key readable is impervious to software undermining. None of your documents and data can be compromised thanks to the number pad password system that operates separately from the device's digital relationship with the computer to which it's connected. The Lok-It Numeric Flash Drive even has its own built-in battery with 30 seconds' life so that you can type in your code before you insert the gadget into a port.
The Lok-It Numeric Flash Drive Requires a Combination to Access Data
Amelia Roblin — May 13, 2011 — Tech
References: lok-it.net & unplggd