These ultraviolet pens are ideal for marking currency or personal property, writing covert "invisible" communications, taking sensitive notes, etc. The markings remain invisible until examined under an ultraviolet light source.

The Prison Pen is made with a soft rubbery material that bends under the slightest pressure, making it nearly impossible to do lethal damage with it.

This amazing Space® Pen from Fisher Space Pen Company allows you to write in any environment. It can write at any angle in all weather conditions, even upside-down...

This amazing Space® Pen from Fisher Space Pen Company allows you to write in any environment. It can write at any angle in all weather conditions, even upside-down...

This amazing Space® Pen from Fisher Space Pen Company allows you to write in any environment. It can write at any angle in all weather conditions, even upside-down...

If you aren't familiar with "check washing", you ought to be. It's a rapidly expanding crime in which thieves steal checks....

The very rare Russian KGB disappearing ink spy pen is now available for sale in the U.S.!

The unique new Mossad Pen is an amazing breakthrough in covert ink technology. Its ink has the capability to quickly transform into a non-visible format. Your confidential written documents can disappear for high-security storage or during clandestine transport. Re-constructing the original material can also be accomplished quickly and easily whenever required.