After hearing day after day about our children and babies being kidnapped I got to thinking: We put micro-tracking chips in our pets to be able to find them when they are lost. I believe we even have them in cars.
Why not our children? Yes, I know it sounds "far fetched," but I don't think so. I must admit I do not know the "mechanics" of the devices used to track these chips, but I guess they must work on pets and cars. They are very small, can be put under the skin and cannot be seen. This could be done and only the parents and doctor would need to know, not the child. When he or she is older they could be told and when the time is right, it can be removed.
This is a sad state of affairs, but with the way of the world today, it just might work and save your child. At least it is worth looking into and considering.