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Device for high-frequency sounds to prevent loitering by teenagers

http://www.movingsoundtech.com/

by kljensen • 16 years ago

2 3 16 years ago

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movingsoundtech.com

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kljensen• 16 years ago

I enjoyed scrolling to the bottom to listen to the different sounds the device can produce. The disclosed age/frequency pairs seem remarkably accurate and, of course, the sound is quite annoying.

RiderOfGiraffes• 16 years ago

This device is not without controversy:

http://www.bbc.co.uk/news/10412057

http://en.wikipedia.org/wiki/The_Mosquito#Opposition

http://en.wikipedia.org/wiki/The_Mosquito#Legal_status

http://www.liberty-human-rights.org.uk/issues/young-peoples-...

http://www.dailymail.co.uk/news/article-513822/Buzz-Outcry-C...

Gibbon• 16 years ago

My local library solved this problem by blasting three different operas at obnoxious levels just outside the doorways.

It works, but it makes me cringe every time I walk into the library.

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