IOL: New teen-repelling gadget launched

IOL: New teen-repelling gadget launched

A new gadget repels gangs of teenagers by emitting a high-pitched noise that can be heard only by under 20s.Police are backing the Sonic Teenager Deterrent, nicknamed the Mosquito because of its sound, reports the Daily Telegraph.

It annoys teenagers so intensely they have to clutch their ears. Eventually they can stand it no longer and have to move on.

But because the body’s natural ability to detect some frequency wave bands diminishes almost entirely after 20, adults are completely immune.

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