Remember the old Mission Impossible, when “this message” would self destruct in 24 hours. It is now a reality at least in paper form, thanks to Xerox. They’ve come up with self-erasing paper that can be used over and over again. Of course that’s great for trees and our environment in general. It’s also great for spys and paranoid types. The paper is not erasable, but self-erasing, leaving you with a completely blank sheet of paper after 24 hours that you can reuse up to 100 times.
The paper contains specially coded molecules that create a print after being exposed to ultraviolet light emitted from a thin bar in a printer. The molecule actually readjusts itself within 24 hours to its original form to delete the print, or applying heat can readjust the molecule instantly. Pretty nifty.