Bedwetting alarms

This seems like an extreme way to train your kids from bed wetting, but what do I know? I'm not quite there yet so don't have first hand experience. The Bedwetting Alarm is worn on the wrist with the wire going up the sleeve and all the way down the pajama bottoms where they are fastened. The alarm goes off when the kid starts to go, thereby "reminding" him/her to get out of bed and go to the bathroom. I guess that's one way of doing it.