[Mannaggia l'America]

This is as dumb as the sign hanging at the salon where I get my hair cut. It says "Please turn off your cell phones as our computers are networked.".

Ever hear of a cell phone interfering with a computer network?

They really just want the cell phones off so you are not trying to answer calls why you are getting your hair cut, and also bothering others. But just say that - don't make up crap.

[Kirkwood]

“Ever hear of a cell phone interfering with a computer network? “

Yes they can. We have to check for this during development of computerized medical devices. In some cases incoming rings or pings to cell phones will interfere with computers.