What you need before starting
Just one thing: both people must have Solo2 open in their browser. Nothing else. No contacts to import, no number to give, no code to request via another channel. Everything happens within Solo2, encrypted from start to finish, without our server knowing who is connecting with whom.
If the other person doesn't have Solo2 yet, send them a link to solo2.net. In a minute they'll have it running — without registering with real data, without an app store. Open the browser, choose a made-up username, and you're in.
A tip: if they use an iPhone, it's better to install Solo2 on the home screen from the start (Safari → Share → Add to Home Screen). On iPhone, the browser and the installed app have separate vaults — if they start in the browser and then install, they'll have to create a new account. On Android, this doesn't happen: the installed app and the browser share the same vault.
Scenario 1: You are together
If you are in the same room, the QR code is the fastest and most secure way. No data leaves your devices.
- Person A taps the Share button in Solo2. Their QR code appears on the screen.
- Person B taps Scan and points the camera at A's QR code.
- A beep sounds. The connection request is sent automatically.
- Person A accepts the request. Done. The tunnel is created.
From that moment on, everything you send each other — messages, photos, files, voice notes — travels directly from one device to the other. It doesn't pass through any server. It isn't stored in any cloud. There are no metadata. It's like talking in person, but in writing.
Scenario 2: You are far apart
If you aren't physically together, the invitation link is the way. It's a link you can send via any means — email, WhatsApp, SMS, Telegram, a note written with a pen. The medium doesn't matter. The important thing is that the other person opens it.
- You tap Share in Solo2 and copy the invitation link.
- Send that link to the other person by the means you prefer.
- The other person opens the link. If they already have Solo2, they connect directly. If not, it guides them to create their account in a minute.
- You accept the request. Tunnel created.
The link contains your linking code, which is fixed and personal. It doesn't reveal your name, your identity, or your data — it only allows someone to send you a connection request. You always decide whether to accept it or not. The server keeps no record of what codes exist or who they belong to: it's a blind server by design.
What if I want to invite someone who doesn't know Solo2?
Exactly the same. The invitation link works for both existing users and new people. If the person receiving your link doesn't have an account, the link itself leads them to create one. In less than a minute they have Solo2 running and the connection request with you ready to accept.
They don't need to download anything from any store. They don't need to give their phone number. They don't need to verify an email. They just choose a username — which can be made up — and a password. That's it. No barrier to entry.
Why this is different
In any other messaging app, connecting with someone involves sharing something personal: a phone number, an email, a public profile. That information is recorded on the servers of the company managing the service. They know who talks to whom, when, and how often.
In Solo2, connecting with someone leaves no trace. Our server helps two devices find each other — like an intermediary who introduces two people at a party and then leaves. It doesn't know what you talk about. It doesn't know how much you talk. It doesn't know if you keep talking or have stopped. Because once the tunnel is created, we disappear from the equation.
It's not a slogan. It's the architecture. And the architecture cannot be changed with an update of terms of service.