I was thinking that some kind of permanent physical attachment with passive electronics could be given to children, like an ankle bracelet used for home curfew, monkey's headband, a dogs shock collar, or just a nice bracelet, call it MoB, which couldn't be removed until they are of age. Devices they are given could be associated with those devices and not usable without them, if they disappear from passive scanning then they have been tin-foiled, etc etc. I've not seen any discussion of this type of approach which gives children something to aim for - freedom, and tallies with human historical culture as well.
My God, what a horrific and evil idea
go on, spell it out - its just a thought experiment - how is it worse than the death march we're already on? and the inexorable march to control adults, this is the opposite of that, and it reflects the control we're supposed to exert over our children, in a pretty neutral way (it seems - waiting for your arguments to burst my balloon!). Society and parents control you while you need a parental guardian, then once of age you're free to do whatever we like.