Privacy is a fairly modern concept, it didn't exist a couple of hundred years ago, but it is something I cherish. Younger generations don't value it nearly as much, and perhaps the circle will come round again.
I am quite sure babies will all be chipped at birth one or two generations further down the line. The chip will store all their medical records, bank details, access to home and office, and location details, possibly even their voting records and beliefs. The details will be available to every government organisation, police, hospital etc, it will make controlling the population so much easier. Hacking into these chips will become a major focus for criminals and foreign powers.
It is not a world I would want to be a part of, but it I don't think it will worry overmuch those who have never known anything different.
My heart goes out to the parents of any missing child, and I can understand how attractive it would seem to be able to call up their location on a screen when you would do absolutely anything to get them back. I pray that the parents will get some information soon.