Mosquito Ringtone

The Origin and Use
The technology of mosquito ringtone is sourced from the "mosquito device" developed by Howard Stapleton primarily to drive away the teenagers who hang around the shops in UK. The device that Stapleton developed for Compound Security Systems emitted a sound called "teen buzz" that caused a great deal of annoyance to the teenagers or younger people. However people past the age of teenagers remained largely unaffected by this modulated 17 kHz sound.

This same technology ........Click here to read more.....