...blog covering security and security technology. « Pirate Terrorists in Chesapeake Bay | Main May 19, 2009 InvisibleInk Pen This is cool. It writes like a normal pen, but if you run a hair dryer over the written words they disappear...
http://www.schneier.com/blog/archives/2009/05/invisible_ink_p.html
...blog-assets.bigfishgames.com/Walkthroug hs/Avenue-Flo/avenue-flo 169.jpg[/img] Grab the invisibleink revealer pen and wipe it across the paper. You have to input the numbers associated with the description on the...
http://www.playfirst.com/forums/thread/216382#219402