Ok it's not exactly about that, but the answer to that question is answered. Check out this post from Schneier on Security:
More than a year ago, I wrote about the increasing risks of data loss because more and more data fits in smaller and smaller packages. Today I use a 4-GB USB memory stick for backup while I am traveling. I like the convenience, but if I lose the tiny thing I risk all my data.
(from: A Security Market for Lemons)