I used to think something like this wouldn't be a big deal, but then I realized it's the first step of a horrible reality.
it will be introduced eventually, it's inevitable, and at first it will probably just be a form of I.D, criminal records etc.
but then you'll be able to use it like a credit card, then there will probably be different levels of chips, that classify you, and deny you access from specific things, eventually people will face charges of having their chips turned off- being removed from the world basically
I don't mean to sound paranoid, and I don't mean I expect this within the next 50 years, but I do expect it to happen eventually.