Rather than the Freaky Spy Gadgets we usually see, this pen isn’t intended to spy on someone else, but rather to write secret messages and then destroy those letters before the enemy sees them. The pen has special refills that can be used to write invisible letters, and if you need to read such messages, you will have to read them in using the LED on top of the pen. There’s a paper-lacerating function as well, so secret messages can be destroyed. Costs $1.72.
Via: CrunchGear
