This is a preventative for kidnapping. Through the use of stranger scenarios and stories your child will develop an awareness to protect him or her from all the strangers.
This whole “Stranger Game” gives me the creeps. Does this actually work? I also dislike the idea that if you “do something,” bad things won’t happen. This smacks right up with the idea that victims of crime have options or control somehow. Maybe this really is to make parents feel like they are “doing” something.
Regardless of how you feel about this kind of material, it is weed-worthy since resource contact information is outdated.