Or maybe we as society do already have reasonable limits where "publicly available" is not equivalent to "publicly indexable".
Or maybe we as society do already have reasonable limits where "publicly available" is not equivalent to "publicly indexable".
The types of radiation that you're comparing have two very important differences that influence people's expectations: First, they're blocked by very different sets of substances. Second, we've got a detector for one of those ranges built into our heads. I don't think it's reasonable to treat the two segments of the spectrum in the same way.
I expect vehicles to drive by my home. I expect people in those vehicles to have wifi devices that can see the broadcasts from my AP. I expect their devices to capture that data, possibly store it, and possibly transmit it to another device. I think it's unreasonable to assume that someone won't do that. I don't have a strong argument for how capturing and publicly indexing that information is harmful to me.
Video surveillance of public space is illegal, not even the government can do that.
At least here in Germany.