http://www.hardocp.com/news.html?news=MTk0OTUsLCwsLCwx
Adult Proof Ring Tone?
This story has been floating around for a week or two but this is the first time someone has actually provided a link
http://news.com.com/A+ring+tone+meant+t ... 82685.html
to the high frequency tone in question. I downloaded the high frequency noise and played it, every kid in the room could hear it but my wife couldn’t. Oddly enough, I could hear the sound just fine.
The cell phone ring tone that she heard was the offshoot of an invention called the Mosquito, developed last year by a Welsh security company to annoy teenagers and gratify adults, not the other way around. It was marketed as an ultrasonic teenager repellent, an ear-splitting 17-kilohertz buzzer designed to help shopkeepers disperse young people loitering in front of their stores while leaving adults unaffected.