Zapping teens with noise

In order to dissuade young people from loitering outside the Gallery Place Metro station, nearby businesses have installed an device that blasts an ultrasonic tone that (allegedly) only people younger than 25 can hear.2

The Mosquito Device cranks a tone set at 17.5 kilohertz, according to the Washington Post.

Can you hear it? See for yourself. Scroll to the bottom of this page and find out.


2This was a plot on a "30 Rock" episode in which only the youthful Cerie could hear a tone emitted from an iPhone app. I had no idea that was a real thing.

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