Do phone number requirements for account sign-ups effectively deter/mitigate spam?

ALostInquirer@lemm.ee to No Stupid Questions@lemmy.world – 65 points –
22

Truth social, last I checked, required a phone number and they're almost exclusively made up of spam.

Doubtful. Getting a temporary phone number is as easy as getting a temporary email address.

Which is also why most services that use phone number for user verification ban VoIP numbers, making this basically useless

To OP: it does add significant block to spammers so they may only create 5,000 accounts slowly instead of millions of accounts quickly.

Most email services require a phone number or other email service to sign up if there is anything fishy about your connection/browser, and there can be hundreds of things, even just some specific browser extension installed, or you using the same mobile network IP as a spammer.

And there are services where you can buy a real temporary 4G/5G number (non-VoIP) for a service for less than a dollar per use. Once a number has been used for that service it still has every other X number (thousands) of services it can be used for before it's retired from the pool. But that does add up after a while if you're making tens or hundreds of thousands of accounts.

Requiring email of phone numbers isn't always something virtuous like stopping spam. It's also often about first party data acquisition. Even if some people use burner accounts, most won't, and that means more data to share with advertisers.

I've never gotten a spam message on Signal.

I used to get a bunch a couple years ago. Since then, I've deleted all Instagram, Facebook, Reddit, Snapchat, etc. I only use Lemmy. No more spam or phone calls.

I also use separate phone and phone number for banking and actual important stuff so that phone is off until I need it so ymmv

I would not sign up a service that requires a telephone number.

Google voice has been around for a long long time. But I can't use it for registration because it's classified as a voip

For Americans, yes... but everywhere else in the world phone numbers are cheap as dirt. When I was overseas in Spain my local number cost me 3 euros/month

They are cheap as dirt in the US too if you get a burner phone.

Really. Can you get a burner phone for anything close to $3/mo?

There was a service that only charged if the phone was used that day. A family member of mine would turn on their phone once a month, check messages, make a few calls, and then turn the phone off until the next month. I think they were paying about $2 a month.

This is interesting. Do you know the company name and/or have a link?

Not a clue. They got it from inside of one of the big box stores or grocery stores, so I guess from one of those little kiosks they sometimes have.

That exact price with a new phone? No.

Like $10 a month or less by reusing phone hardware with new Sim cards to use occasionally for sms verifications? Yes.

You don't get the visceral experience of snapping the phone in half that way.

Not exactly an endorsement. I had unlimited calls, texts and 20GB of 4G data for less than 10 dollars for a few years until the recent price hike every company decided they wanted a slice of. Even then, it came out at about 11 bucks. North American phone packages are a joke with all the oligopoly BS going on.

There's a service that gives you a dedicated Ukrainian number to receive texts at an email address for $15/year.