Those pesky teenagers.

Apparently they've made a device to keep teenagers away from stores or whatever. It works like those mosquito repellers, by emitting a very loud high frequency noise. Basically, old people can't hear it, and it's unbearable to people under 20.

Gee guys... that sounds like a great idea... especially if you don't want anyone under 20 to shop in your store... ever. Never mind the fact that eventually all the old people will die and those who are currently under 20 will be the ones buying everything, and they'll never set foot near your store. Not very forward-thinking if you ask me.