Book comments (no spoilers):
I cannot see a better way to spend $12.95 than on a great mystery/ adventure/ spy/ thriller novel!  I loved the fact that Duncan had an SL-5500!  I love my 5500, and it's cool to now have a fiction work based on it.  I also loved the plot twists and decriptions...especially of the hacking techniques.  Way better than the Net or even Sneakers.  If (the author) got the funding for a movie, I'd definitely be keen on it.  I'd love to see Kurt Russell as Duncan and Lucy Liu as Lin!  Perhaps Atkins (his arch-nemisis) could be played by someone real mean and crazy like Jesse Ventura...or is he still busy running Minnesota?  HA!
The only technical flaw I saw was that when Duncan was on the run for a few days and using his Z.  Where did he charge it?  I must have to assume he some kind of portable charger.  <grin>  Anyway, great story and thank you for sharing it with the ZaurusUsersGroup!
I am in the process of moving and giving away/ keeping a bunch of books that I don't want to move or would never read again.  This book is staying on my shelf and I hope to turn other Zaurus owners and lovers of technology/ fiction on to this well written novel.
P.S. I really liked the novel "Takedown" and it's website to go along with this non-fiction story of the arch hacker Kevin Mitnick.  
http://www.takedown.com/  If you enjoyed the fiction novel Z4CK, then you may enjoy this non-fiction work as well!
P.P.S. Where can I download Z4CK.source???  Perhaps we should post a request in the "User Requests for Applications" forum???  HA!