Pick a family code word sothat if someone approaches your child and says, 
"Mommy sent me to pick you up," they can ask him the code word. If he doesn't know it,
they know he is not safe and not to go with him.
Experts say it should be something your child will know, like an animal, alligator, giraffe,
or cheetah, but something that isn't usually seen or talked about around the house.
DO NOT use pet names or favorites things.
Remind your child of the safety word every now and then so they remember but not too
often to scare them.