When I was working at EFF, I started writing (but never finished) a couple of essays along the lines of "the degree of trackability of mobile phones is an unfortunate accident, and we should fix it". It basically comes from routing requirements (especially to receive incoming phone calls) combined with billing requirements (to make people pay for their connectivity) combined with the empirical requirement to see whic…
Stellar reasoning. Did you ever get to the point of hypothesizing good ways to align incentives to make this happen? It is hard to tell (having not thought much about it) whether this is a “smart well meaning engineers need to make new standards” problem, a “we need to harness the power of corporate greed problem,” or something else.
My memory is a bit hazy but maybe it was the whitepaper for PGPP[0] that OP mentioned?