Mojopac.com site went online on august 2006. Their is another alternative as well Ceedo, but this takes the cake.
It’s not hardware. But a virtual environment on a removable drive. Its only a software piece.
So any external storage such as ipod or anything allows you to go to ANY SYSTEM and use your applications and games on any computer with out having to install any thing even if the security is high on the system just as long as you can connect a external drive of some sort even a thumb drive