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by gjsman-1000 1084 days ago
“Your iPhone doesn't send any of the location information that it uses for this feature to Apple.”

I’m actually curious how this is possible. Does it download a carbon efficiency database for the detected region? Otherwise, how do you know the schedule for the best times? Is the database shipped with iOS? How granular is it?

4 comments

I doubt this is how it works, but you could do a k-anonymity thing and search for a location by submitting the first few characters of the hash of the location, and getting back a response with the data for all locations with a hash that starts with those characters. Client picks out the correct location from the response, and the server is never aware of which one the client wanted.

Same as searching for passwords by partial hash with the pwned passwords api.

I think it connects directly to Wattime's service: https://www.watttime.org/explorer/#2.06/40.7/-107.55
I guess 'clean energy' tastes different to the phone or something.

{ sarcasm }

This idea of different types of energy on the consumer end is pretty baseless. It's a complex energy-space and unless you have your own hydro power or such, maybe claims like this are theatre.

You can buy green energy on the financial market, just as you can buy gold on it