>>The government keeping detailed records of who went where, when should be completely banned, totally off the table.
I completely agree with you.
> It literally hasn't been a century since the Europeans went full Nazi.
The "Europeans" didn't go full Nazi. Germany went full Nazi. Italy went full fascist. Their allies conformed to various degrees. But it was also Europeans who fought and died in their millions to overcome fascism. Most of the Jews and others who died in the Holocaust were Europeans.
It literally hasn't been a century since the Europeans went full Nazi. We have no idea where the world will be in 25 years, but we do know there are a lot of plausible scenarios where this technology will get people killed.
The government keeping detailed records of who went where, when should be completely banned, totally off the table. This is just laying the groundwork for the next time the fickle voting public decides to try authoritarianism again.