NaturalNano Develops Cellphone-Blocking Paint

This image was lost some time after publication.
This image was lost some time after publication.

NaturalNano has used nanotechnology to develop a type of paint that stops cellphone signals. It's done by blending particles of copper that are inserted into nanotubes, and then mixing and suspending these tiny particles into a can of paint.


NaturalNano's idea is to completely block cellphone signals with this paint, and then provide a radio filtering device that will allow wireless signals to pass through only when they re appropriate. Using this system, a theater owner could allow cellphone signals before the show or during an intermission, but completely block them during the movie. At the same time, that theater owner could still allow emergency radio communications to get through. While jamming of cellphone signals has been ruled illegal by the FCC, it's not a crime to passively prevent signals from passing through, which is exactly what NaturalNano's paint does.

Depending on your point of view, the ability to shut down all wireless communications could either be a nightmare or a dream come true, but here's hoping every theater and concert hall in the world is soon painted with this stuff.


Slapping on a coat of silence [Newsday]

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If people in theaters would only learn to turn off or set their cell phones or pagers on vibrate, this much more drastic solution would not be necessary.

Many movies I attend have either a person or the screen tell people to adjust their phones. It seems to me the problem is already less than it used to be.

None-the-less the paint could be very useful in other situations such as hospitals where cell phone signals can interfere with other vital electronics.