While some folks have tried to use opera or other “un-cool” music to deter teenagers from loitering at certain locations (e.g., convenience stores), here’s a bit more insidious of an idea: an annoying sound pitched so high that only young folks can hear it.
The device, called the Mosquito (“It’s small and annoying,” Mr. Stapleton said), emits a high-frequency pulsing sound that, he says, can be heard by most people younger than 20 and almost no one older than 30. The sound is designed to so irritate young people that after several minutes, they cannot stand it and go away.
So far, the Mosquito has been road-tested in only one place, at the entrance to the Spar convenience store in this town in South Wales. Like birds perched on telephone wires, surly teenagers used to plant themselves on the railings just outside the door, smoking, drinking, shouting rude words at customers and making regular disruptive forays inside.
“On the low end of the scale, it would be intimidating for customers,” said Robert Gough, who, with his parents, owns the store. “On the high end, they’d be in the shop fighting, stealing and assaulting the staff.”
Mr. Gough (pronounced GUFF) planned to install a sound system that would blast classical music into the parking lot, another method known to horrify hang-out youths into dispersing, but never got around to it. But last month, Mr. Stapleton gave him a Mosquito for a free trial. The results were almost instantaneous. It was as if someone had used anti-teenager spray around the entrance, the way you might spray your sofas to keep pets off. Where disaffected youths used to congregate, now there is no one.
At first, members of the usual crowd tried to gather as normal, repeatedly going inside the store with their fingers in their ears and “begging me to turn it off,” Mr. Gough said. But he held firm and neatly avoided possible aggressive confrontations: “I told them it was to keep birds away because of the bird flu epidemic.”
The device puts out a chirping tone that sounds a bit like tinnitus, and can be broadcast at 75 db, which is below safety levels.
I imagine it might also drive off legitimate teenage customers (or employees), but it does seem pretty clever.
(via collision detection)