Now this is called Virtual World :)
A US company has launched a computer program that can turn most flash memory sticks, hard drives or iPods into "virtual" PCs that can run most programs that work on Windows XP.
The software, known as MojoPac, allows you to use any computer without leaving a trail of evidence.
Every time you plug your MojoPac-enabled device into any Windows XP PC , MojoPac automatically launches your environment on the host PC. Your communications, music, games, applications, and files are all local and accessible. And when you unplug the MojoPac device, no trace is left behind your information is not cached on the host PC.
This independence allows people to use public computers without a trace of their session being left behind. PCs typically store a record of activity long after the computer has been turned off. "It's a slick way to move from machine to machine," says Rob Enderle, founder of the Enderle Group, a research firm that follows the PC industry. "It's about as safe as you can get."