Be VERY careful what you wish for...
They're coming.
First, the guilt response will be invoked upon moms and their kids, "Don't you want to know where your kids are at all times" followed by "If you care about your kids, you'll have them implanted", also appealing successfully to a Keeping up with the Jones' mindset - Sara next door has little Jimmy chipped, and for only a 1000 bucks; isn't your peace of mind worth a thousand bucks.
Safety, fear, security and convenience.
The kids, the older ones will be sold on the convenience of it - pay by chip, and by the time they grow up, they won't even have an idea of a society where everyone isn't chipped.