High pitch teen scarer

This guy in Wales has invented a gizmo that repells teenagers. It emits a high pitched squeal that only teenagers can hear. They can't bear the noise, so they move out of range.

Apparently, if you're over 30, your hearing is already screwed up enough for you not to notice the squeal.

It's designed to stop kids from hanging outside shops and scaring away their hearing impaired elders.

Great idea. Give that man Nobel peace prize! Click for New York Times article