Intruder Alert! Do you consider your room a private oasis? If so, then you probably don't like others to intrude. But you can't stay in your room all the time. You need help to guard against "space invaders." With this book and kit, you'll learn different ways to keep pesky parents, sneaky siblings, and fiendish friends from sorting through your stuff. You'll read all about locks, security systems, and secret hideouts! And you'll put together your very own Electronic Room Guard that will keep the snoops, sneaks, and pests on the outside of the door where they belong.