Micro-Solutions have a nifty device that combines a hard drive with a fingerprint sensor. The idea is a user can only access their own files if they have provided the right authentication. In this instance the right fingerprint.
That aside, having a restore point is something of some worth and this product takes the concept a lot further. Recovery Manager is a networked version of the same thing but with a few more bells and whistles attached.
A book about the inner workings of the hacker's mind would not be complete without mentioning the world's most famous hacker, Kevin Mitnick. This book does not disappoint in that respect. This book deals with getting inside the mind of a hacker. It a kind of "know your enemy"-type book.