Your friends/family probably won’t do this, so your phone number is going to be shared with Twitter anyways.

Well then the obvious solution is to start treating phone numbers as you would an email address - effectively public.

I would love a version of privacy.com for phone numbers..

Start? It wasn't that long ago that the phone company published a book with near everyone's phone number in it.

There was no book with everyone's phone number in it. There were many books that covered small regions. If you lived in Oshkosh Wisconsin and wanted the number for someone in Kansas City, or even Madison Wisconsin it wasn't that easy to get that book. Maybe your library had it. Phone numbers on paper aren't that useful. You can't robodial a paper phone book without hiring actual people. But no matter what you couldn't get millions of phone numbers while sitting on your couch, and if you could they would be useless because they were all on paper.

The books were hard to get, but directory assistance did exist if you called the operator.

I'll bet there are quite a few people on HN that have never dialed 411 or 1-<area-code>-555-1212.

None of that let you treat your phone number as anything other than public.

I mean we realize this thread of argument has nothing to do with the point right?

A cell phone number does not equal your kitchen phone in terms of access to information. The whole this is moot. The issue now is that this is my personal phone number, me, personally, and is being used as a piece of validating information in a variety of compromises databases.

This just isn’t true. Ever heard of the Haines Directory?

I used it at a summer job in the late 80’s. You could order reverse lookup books for anywhere you wanted, and of course could get that data electronically too. You could also call information for anywhere you could think of by dialing the area code plus 555-1212.

Never heard of it, but how much did it cost? How much did the reverse lookups cost? And even if you could get it electronically there was no way practical way to do much with them.

With the twitter leak millions of phone numbers/names are available for free instantly, and the technology to do some harm with them is readily available.

In my country it is voluntary to be listed in such a phonebook whereas with already a small number of friends the chances approach 100% that at least one of them has my contact info stolen by Twitter, FB, WA, etc. If i dont like this i would have to stop giving out numbers and not be reachable by sms/call.

I have a friend of mine who flat out refuses to give email address or any contact info of the people I meet at his house. It has been a bit annoying one time or two.

Phone numbers used to be really public. As in "Someone has collected your phone number, your address and family name and put it in this huge book they update every year. And they drop a copy of this book on everybody's porch.".

This is completely correct behaviour if you ask me. So you met me at someone's house, so what, it gives you the right to contact me?

You could always ask your friend to relay a message right?

These people I have been seeing them at his house on numerous occasions, we are on a first name basis and open jokes.

It's not like I had glimpsed someone's shoulders and wanted to cold call them to pitch them my startup idea of the week or creepily ask for a date (I remember it was to follow through with a conversation about DIY hydroponic with one and coffee brewing with another). Friend got tired of relaying messages at some point :). We rarely got to the point of giving out contact information on the moment though (that was the flow of those meetings and I think it's not a cultural thing to exchange business card in such settings in my country). Also, we are not the kind of people to hang on facebook, so discovery is weak.

Totally agree it is correct behaviour with strangers though.

And it was only a minor annoyance at some point so well... no biggie. (Except that time he divorced and he wouldn't give me his ex-wife's number so I could get back some DVD she had borrowed)

edit: also, I wouldn't ask for contact info if I wasn't confident that it was okay for the person to get a call from me and I am confident that my friend knows I won't mess up things by being inappropriate.

I see where you are coming from. I just meant as a general rule it is better to not give out people’s information.

The message your friend could have relayed could have been “hey is it ok if I get your contact info?”.

What your friend isn’t getting right is that maybe you and his friends DO want to contact each other. He is deciding for both parties that they don’t. He could adjust his behaviour on that front a bit.

Why not just ask the people directly for their contact information? Or vice versa ask your friend to ask them if it's okay to hand out your contact information?

I've had several friends ask if it's okay to give out my contact information to third parties who were interested in acquiring this information to continue conversations through more private channels.

But there was always an element of consent involved on my part.

> I have a friend of mine who flat out refuses to give email address or any contact info of the people I meet at his house.

Is there a reason you do not ask those people for their contact information directly?

> Well then the obvious solution is to start treating phone numbers as you would an email address - effectively public.

> I would love a version of privacy.com for phone numbers..

I've used google voice and twilio for something similar, though nowhere near as plug and play as a privacy.com-like solution.

I wish there was an easy way to effectively only allow white listed callers to call you directly (and the rest of the calls to go to voice mail). That's what I do with my email at least.

You might find this interesting: https://phoneprivacy.co/

I get nuisance phone calls all the time, it is a lot more disruptive than nuisance emails.

Unless you have no Twitter account.

That doesn't matter.

As long as one of your friends or relatives has and accepts to upload their contact list (with your number included).

Note this trick is also generalizable to apps/websites asking for notification permissions.

Ideally, iOS would have an option to say "always deny Contacts access and never bring up a dialog again".

I don't share my contacts with any app, and I hate being asked again and again for every single new app. No means no.

Actually for most things in iOS, once the system dialog has been brought up, the operating system won't allow it to be brought up again. It won't stop the application in question from nagging you, but at least then even if you click "allow" on the application pop-up the system will still require you to go into the app permissions and explicitly allow it.

That's exactly what iOS does, the app is making a fake system popup to ask multiple times and only brings you the real system popup if you agreed to the first one.

What does Apple allow that for App Store apls? That's obvious circumvention of iOS's privacy control regime.

My post below is wrong, please move along. Keeping as-is, so the replies make sense. Thanks repliers!

The native prompts don't allow for app specific explanatory text to be presented. I haven't reviewed iOS guidelines, but Google provides guidance to inform users of why you're asking for permissions before you do it, and I would guess Apple would suggest the same as well. Pestering people for access once a day is probably not within the scope of the guidelines though.

> The native prompts don't allow for app specific explanatory text to be presented

Not true. iOS apps can specify explanatory text to be included in the native prompt. In fact they are required to do this, since at least two years ago.

The NSContactsUsageDescription string (in the Info.plist file) is the place to specify this.

https://developer.apple.com/library/archive/documentation/Ge...

Incorrect, iOS does allow explanatory text on the system prompt, in fact it’s required.

There is no good reason for Apple to allow apps to mask permission requests with their own dialogs, it’s just a case of not bothering to fix this loophole.

Why do people keep saying clearly wrong stuff. You sound like you know what you are talking about, but are 100% wrong.

I've had apps ask me to go to system settings myself to enable some permissions because I've disabled it via the said OS prompt.

Similar to being asked "do you like this app?" If you say "Yes", you are directed to rate it, if "No", you are not.

this worked for me also.