You can make a DemocraKey run on an iPod, USB key, digital camera, or any other portable media you can think of.
From the DemocraKey website:
It provides a layer of protection from viruses, a layer of protection from people trying to see what sites you're visiting, and a layer of protection to stop hackers from viewing files you don't want them to.
In a word, it does what computers already should do: Look out for your privacy and security.
A DemocraKey is a portable piece of software that works on any computer. Just walk up, plug in a DemocraKey, and you can be assured your files are much safer, your computer is better protected while browsing the web, and nobody will be able to tell which site you're visiting.
Video bellow if you want to skip the lame reading:
Step 1: Download DemocraKey software
Plug in your iPod or USB key, and let your computer recognize it.
Then run the installer.