> Either it needs a warrant or it’s fully open and people can start creating websites showing the movements of local politicians.

I want this data to require a warrant to access. Having said that, I agree that it should be open to everyone if warrants aren't required.

I've said this for years and I almost always get the "But stalkers!" pushback.

I think "But stalkers!" can be answered with applications to enable individuals to track their stalkers themselves. Since the police have no duty to protect I'd argue tracking a stalker yourself is probably a better solution anyway.