10 Strangest Inventions

1Electromechanical teenager repellant Howard Stapleton (Merthyr Tydfil, Wales) invented an electromechanical teenager repellant — a device that makes annoying high-pitched noise designed to be audible to teenagers but not to adults. The “Mosquito” ultrasonic teenage deterrent aims to solve the problem of unwanted gatherings of youths and teenagers in shopping malls, around shops and anywhere …