Oh, yum, more tracking.
Let's just make sure that the kids get tracked as early as possible, shall we? Kindles track the reading of their users, and I would love to find a way to stop that from happening (it's the only thing I *don't* like about Kindle). If that's off, carry on, even for kids.
A nice side effect is that such gear is then proven to be military grade. If it survives kids, it will survive anything.