[MMMMMM]

I find it disturbing on three fronts:

1) Parents' prior permission or agreement not sought

2) If I were a kid I would hate it

3) Perhaps most importantly, I think the whole human/tracking via GPS/implantable microchips/RFID has enormous potential for abuse. I don't like seeing any developments along such lines implemented, for that reason.

Such a device if implemented nationwide or worldwide could make it possible for an Orwellian sort of police state to have much greater control than even the secret police did under Stalin. This is the forefront of technology for total control of the human species. Granted technological development can't really be stopped but that doesn't mean we have to implement it either.

In Soviet Russia, you had to get permission from the authorities to travel from state to state within the country, carrying your national ID card at all times. With this technology, the day could conceivably come when you have to get permission to drive across town (perhaps a computer's 'OK' for mere jaunts like that). And if genocide or slavery were ever to be a major threat in the future, such devices would help make it almost trivial to implement.

You could be controlled by such a tag or chip in ways we don't even imagine yet. Your car wouldn't start without a 'clear to start car' code from the chip, and the chip must be 'clear' with the central database. The nanotech repair molecules circulating through your bloodstream and helping to keep you healthy could be, at the flick of a bit, switched to 'off' or even to harm you instead.

Don't think it could happen? It could. Give humans power and perhaps 90% of them will find a way to abuse it. And such technologies just make the potential for abuse much greater.
The existence of technologies is one thing, but a system for implementing such technologes which has the potential for abuse is another.

All this probably sounds far-fetched but it could be a real possibility within decades.

Therefore I cringe at the thought of any steps in this direction actually being implemented.

One last note: just because something isn't proven harmful does not mean it is proven safe--and what seems safe now may be abused in the future. And the implementation of such technologies has the most shuddering potentials for future abuse that I can conceive.