Research into nanotechnology has now produced a paint that can actually switch between blocking cell phone signals and allowing them through. Yes, it's true!

Nanotubes

NaturalNano of Rochester, N.Y. has made the breakthrough by using particles of copper inserted into nanotubes, which are ultra-tiny tubes that occur naturally in halloysite clay mined in Utah . An estimated 50-thousand of the tiny particles put together equal the size of a human hair.

Walls covered with this paint, combined with a radio-filtering device that collects phone signals from outside a shielded space, can allow certain transmissions to proceed while others are blocked, something movie theater owners and other businesses would welcome.

To find out more about this revolutionary nanotechnology, go to http://www.naturalnano.com.