Once applied, the material will degrade or impair the adversary's ability to move. For Interior applications it can be applied to flat, smooth, non-porous surfaces such as linoleum, tile, wood floors or staircases. Exterior applications include sloped, rough, porous surfaces such as concrete, asphalt, and grassy areas.Link (via Coolhunting)
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.