In prison, virtually anything can be used as a weapon to facilitate trading or even to escape. So, prison officials and guards must be alert to any potential dangers, even from seemingly harmless objects... like a pen.
The Prison Pen is a specially-designed writing utensil created for prisoners... it's flexible, soft and rubbery, and yet it works perfectly well for the purpose it was intended: writing - without endangering prison staff or prisoners.
Implications - The prison pen is safe because it is built using a soft rubbery material that bends under any pressure, decreasing the chances of it being used as a lethal weapon. It's probably the only stab-resistant, workable writing utensil available for most prisons. Expect prisons around the world to invest in the development and diffusion of this product.