You made a jump from being able to trace every move someone makes to 'an oppressive government rounding up dissenters for re-education.' Keeping movement secret

You made a jump from being able to trace every move someone makes to 'an oppressive government rounding up dissenters for re-education.' Keeping movement secret is not what keeps the government from rounding up dissenters for re-education. Governments were rounding up dissenters for re-education a long time ago. They could use passport and license photos for that if they wanted to. Should we prevent those technologies as well? No, what will keep governments from rounding up dissenters is stopping government from rounding up dissenters, not trying to turn back the time on technology.