It seems that some clown has invented a wrist watch that the children can wear and IF kidnapped, can just push a button and it responds like one of those devices that finds your stolen car. I suppose that the ones for finding your stolen car are great, but can you imagine little Johnnie or Suzie with one of those devices? Especially in school and around his buddies? Even though they are told not to push the button unless something bad happens to them---the temptation to grab his buddie's button would be irrisistable. Remember school and on shot day all the guys punching their buddies on the arm that got the shot? Every time one kid got mad at another kid he would push the button, especially if there was a little fear involved.
Now it is also, bullet proof back packs for kindergarteners or at least an insert that you can buy for $300.00 to put in the back pack.
The children DO need protection!! But not this way. Placing armed guards in all the schools is the only way it is going to work. I imagine most of the would be terrorist would be a lot more respectful of a man/woman with a gun that a kid with a dick tracy watch