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If I give you my phone number, and you have True Caller installed and save my number to your contacts, I unknowingly and unconsensually also give my phone number to True Caller and essentially the entire world.

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Aren’t yellow pages also adding everybody’s number without consent?

I didn’t grow up with them so I might be wrong.

It was the white pages but yes. That's why there is such a yawning gap between reality, where nobody gives a fuck if you know my phone number, and niche online privacy activism, where for some reason people care a lot.

It's done by your phone company and they're supposed to let you know and allow you to opt-out.

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