I want a teenager alarm!

From geekology, If you haven't heard (!) yet, stores and malls in England have been using a device called the Mosquito Alarm to keep kids from loitering. It's basically like a dog whistle, but for kids. The device "emits high-frequency noise which is audible — and annoying — to young ears, but generally not heard by people over 20." Apparently it's the same frequency that kids have been using for cell phone rings to avoid adults hearing incoming calls when they're using them places they shouldn't. Now England's commissioner for children and a civil liberties group are joining the fight to ban the alarm devices. I, for one, don't live in England but am all for the use of these devices. Hell, I want one installed in the house. My son just isn't getting the hint. I turned his room into an office, changed the locks to the house, and the asshole still hangs out on the lawn. I mean Jesus, he's 14, time to leave home already.