I've done it before, and I imagine you might have too. You plug in your USB drive into the USB port and open up your work, spend ages working on it, save. Log out. Walk away. ...which is fine, if you're at home. But I'm a school student, and a number of times I have left my thumb drive in a school computer, or seen it happen to other people. Sometimes, you get it back. Other students are not so honest. The problem is, if you lose the USB drive, you use the work on it as well,...