Anonymous voice calls, and why neither side learns a number
A stranger can ask to talk instead of typing, and the conversation happens without either person learning the other one's name, number or whereabouts. The interesting part is what makes that true.
What it is
An anonymous voice call is a short conversation between two people who do not learn each other’s name, number or location. On fisfis it starts the same way a message does: somebody opens the link in a bio, and instead of writing, they ask to talk.
No phone number is typed by either person, because no phone number is involved. Neither of you installs an app. The whole thing happens in the browser tab that was already open, the sender presses Call, the owner of the inbox sees it ring, and either they pick up or they do not.
What neither side learns
This is the part worth understanding properly, because it is the part that decides whether the feature is worth having at all.
The ordinary way two browsers hold a voice call is to find each other and connect directly. It is faster and it is cheaper, and it is exactly what an anonymous call cannot do, a direct connection between two browsers is an exchange of network addresses, which means the first person to answer would hand the other one a rough map of where they are sitting. That is not a detail. It is the whole promise, given away in the second before anybody said hello.
So the sound goes the long way round, through a relay, every time. It costs a little more and it connects a fraction slower, and it is not negotiable: there is no mode in which a call falls back to the direct route because it would be quicker. The relay is the feature.
| The sender | The owner | |
|---|---|---|
| Phone number | Never involved | Never involved |
| Name or account | None asked for | Not shown to the sender |
| Network address | Not exchanged | Not exchanged |
| Whereabouts | Not shared by the call | Not shared by the call |
| Voice | Heard, live | Heard, live |
| Recording | None taken | None taken |
One honest line to put beside that table: a voice is a voice. If you ring somebody who knows you well, they may recognise you, and no amount of engineering at our end changes that. Anonymity here is a promise about what the system tells people, not a promise about what a friend can work out from how you say their name.
How a call goes
The sender asks
On a page where calls are on there is a Call button beside the message box. Pressing it asks the browser for a microphone first, before anybody is rung, permission is a question worth answering while nothing is happening, rather than while a stranger is waiting on the line. Nothing is switched on until the call is answered.
It rings for two minutes
The request reaches the owner wherever they are on the site, not only in their inbox, and it stops on its own after two minutes. That limit is deliberate. A request that sat for an hour would be a way to make somebody’s screen ring at a moment chosen by a stranger.
They answer, or they do not
Declining costs nothing and explains nothing. The sender is told the call was not taken and is told nothing about why, which is the same principle every refusal on this product follows.
You talk, and then it ends
Either person can hang up. The owner also sets a length limit in advance, so a call cannot run longer than they decided it could before it started.
What the owner controls
Everything about a call is the receiver’s decision, and none of it is a decision they have to make while a telephone is ringing.
- Whether calls happen at all. One switch, off by default, and turning it off again puts your page back to writing only.
- How long one may run. You choose the ceiling. When it is reached the call ends, and neither of you has to be the person who ended it.
- One at a time. A second caller cannot ring through while you are already talking to somebody.
- Every individual call. The switch being on is not consent to any particular conversation. You decide again each time it rings.
- Who reaches you. A sender you have blocked cannot ring you, and finds that out no more than they find out that their messages are not arriving.
What is kept afterwards
Nothing about the conversation is recorded. Not by either browser, not in the middle, not for review. There is no audio to be leaked, subpoenaed or accidentally shown to somebody, because none was ever made.
What is kept is that a call happened, roughly how long it lasted, and how it ended, answered, declined, or nobody picked up. That is what makes a finished call a row in the inbox, sitting in the day it happened among the messages either side of it, so a missed call is not filed somewhere nobody looks.
When a call beats a message
Not always, and a product that pretended otherwise would be selling something. Written messages are better when the sender wants time to get the words right, when the moment is not now, or when reading it later is part of the point.
Something that needs a tone of voice
Some things read as sarcasm in text and land properly out loud. Tone is the entire content of certain sentences, and typing removes it.
A question with a follow-up in it
Anything that takes four exchanges to get to the real question takes forty seconds out loud. A thread can carry it; a call finishes it.
Something the sender would never write down
A written message is an object that exists afterwards. For some people that is the barrier, not being identified, but leaving a thing behind. A conversation with no recording is the version of that with no object at the end of it.
Turning it on
Claim a name, open your settings, and switch calls on. Your address does not change and nothing you have already shared has to be reshared, the link in your bio is the same link, with a Call button on the page it opens.
You can also make it the whole point of the page for a while: the Call Me mode puts the ask at the top and the message box underneath it, and it turns itself off after three days. The nine modes are their own post, and what this changes about the alternatives is another.
Questions people ask
- Does an anonymous call show my phone number?
- No phone number is involved at either end. The call happens inside the browser tab that is already open, so there is nothing to reveal: nobody types a number, nobody is shown one, and no carrier is in the middle of it.
- Can they find out where I am from the call?
- No. The sound travels through a relay rather than straight between the two browsers, which is what keeps the two network addresses from being exchanged. A direct connection would hand each side a rough idea of where the other one is sitting, and that is precisely why it is never taken.
- Is the call recorded?
- Nothing about the conversation is recorded, by either browser or in between. What is kept is that a call happened, roughly how long it lasted and how it ended, which is what lets a finished call sit in the inbox as a row among the messages either side of it.
- How do I turn anonymous calls on?
- Calls are off until the person receiving them switches them on. Once they are on your address does not change and nothing has to be reshared: the same link you already gave out opens a page with a Call button beside the message box.
- What if I do not want to be called?
- Leave calls switched off, which is how every inbox starts. With them on you still decide every time, a request rings for two minutes and then stops by itself, and declining tells the caller nothing about why it was declined.
