BlackDog is a fully self-contained computer with a built-in biometric reader and a host of other powerful features. Unlike any other computing device, BlackDog is completely powered off of the USB port of your host computer – no external power adapter required!
To access and use your BlackDog, you merely plug it in to your host computer’s USB port and BlackDog takes over! Your host machine’s monitor, keyboard, mouse, and Internet connection are taken over by BlackDog for the duration of your session, when you are done, you simply remove BlackDog and everything on the host is returned to its original state.
Now, what is so cool about this one, is that it is actually a small Linux server (Debian based). The fact that it is a hardware solution with biometric access makes it safe as well. Too bad it is $199,- for a mere 256mb.
Here is a little promotional video for it (I sure wished I could test one of those things!)
Blackdog in action



