I feel like somebody googling for a quick code snippet to do that in a single POST request should be aware of how challenging the problem space is. That would be a hint for joe random developer that they've come up with a bad idea and should work on something else. But I probably expect too much.

I'd imagine today MIMO data is good enough to triangulate a very accurate (metres) position.

https://www.vice.com/en/article/nepxbz/i-gave-a-bounty-hunte...

https://arstechnica.com/tech-policy/2019/01/t-mobile-sprint-...

https://www.theverge.com/2019/2/6/18214667/att-t-mobile-spri...

I think white pages are still a thing, no?

For the young 'uns - the white pages were part of the physical phone book in every city. You got a new phone book delivered to your doorstep each year for free. Yellow pages listed the phone numbers of every business, white pages listed the phone numbers of the residents.

The crazy part is: almost everyone added their numbers voluntarily to the white pages, because you wanted people to be able to easily find and reach you.

The default was that your number would be in the phone book, it was not voluntary. If you wanted an unlisted number, you had to pay for it.

For reference: I'm old enough to remember using landlines and white pages, but not old enough to have ever had a landline at my own address.

If I remember correctly, Pac Bell had a “opt in” white pages phone number removal which was not charged, but my parents just a few years prior had to pay for theirs with Pac Bell.

Rural NY; yes. I've gotten a very, VERY thin White/Yellow Pages in the past year. Barely anybody in the White Pages section, a majority of it is Yellow Pages and a majority of that is nearly full-page ads for national services, not local providers.

https://www.whitepages.com/reverse-phone

> Whitepages free reverse phone lookup service allows you to enter a phone number and quickly find out who called you. Find the phone owner's full name, address, and more.

[snip]

> Anyone can do a reverse lookup to identify cell phone, residential, and business numbers for free.

That, or you could get a normal white pages and process it using some sort of data processing tool... nah, that's science fiction.

https://www.robertxiao.ca/hacking/locationsmart/ is an example of one provider's public demo (requiring only a phone number) being used to provide non-consensual location data.