Everyone knows how a disappearing ink pen works, but have
you ever needed to make sensitive information invisible
for a period of time and then, at a later time make it
re-appear? If you said yes, then you need this pen.|
Write your sensitive information on the paper, then run a
hot blow-dryer over the paper and, presto, whatever you
wrote is gone. Now, you have crossed the enemy lines, and
would like to make the writing visible again... just place
the paper in your kitchen freezer and the ink will
magically re-appear in its original form. Even better...
the ink can be transformed back and forth as often as
NOTE: This pen works on white paper only.