Yeah, I have to scratch my head about the whole anonymous lack of a unique number. Were IP addresses not part of early packet switched networks like ARPA net?

Yeah, I have to scratch my head about the whole anonymous lack of a unique number. Were IP addresses not part of early packet switched networks like ARPA net? Still, worse than IP addresses are IMEI numbers, on your person frequently, as you move from place to place, trackable in crowds, and from aircraft overhead.