February 12, 2008 Kids' commissioner calls for ban on Mosquito, ultrasonic anti-teen device (Compound Security Systems/PA) The Mosquito has a 20-minute cut-off to prevent shopowners leaving it on all night Philippe Naughton Under 25? Listen here | Over-25s, listen here The creators of a pioneering device that uses high-frequency sound to stop teenagers congregating outside shops, schools and railway stations reacted angrily today to news that the government-appointed Children's Commissioner wants to see it banned. The £500 Mosquito device has been installed at some 3,500 locations across the country since it first went on sale in January 2006. It emits...