Privacy Engineering

Solo2 protects you in two layers: where your messages do not go, and how the few bytes that do leave the device travel. The difference between encrypting well and having nothing to encrypt.

A chat that cannot be altered is a chat you can trust. This is how Solo2 protects the integrity of your conversations.

Your second device is your backup. No cloud. No external servers. Automatic synchronization.

Permanent availability without a central server. Your computer receives everything while your phone rests.

They could encrypt better. They could store less data. But they'll never eliminate the server. Because it's their business.

Don't wait for a connection to start writing. Solo2 sends everything at once when the tunnel activates.

Because it never leaves your computer. When communication is direct, GDPR compliance is automatic.

The wait isn't a flaw. It's proof that your conversation is truly private. If it sent instantly, it would mean a server is storing it.

The server does one thing: help two devices find each other. Then it disappears. Here's how it works inside.

Encryption protects the content. But what really gives you away is everything else. Metadata tells your story better than your words.

Not being in the store isn't a shortcoming. It's a design decision that protects your privacy before you send your first message.

An engineer explained why they didn't need to read your conversations. The metadata already tells your entire life.

App stores record everything you install. But there are apps that don't need to go through any store.

Your number is your civil identity. If an app asks for it, it already knows who you are before you type anything.

Lawyers, doctors and advisors handle information that cannot leak. The tool they use determines whether they comply with the law.

Your phone keeps a record of everything you install. There are ways to avoid it.

Your company might be breaking data protection regulations every time it sends a document through a messaging app. With Solo2, compliance happens automatically.

Just because your messages are encrypted doesn't mean your conversation is private. There's much more at stake than the content.

Many services say your data belongs to you. But when you try to take it with you, you discover that they set the rules.

A test anyone can do to check whether a conversation is truly private. No tech skills needed. No fuss. Just a conversation and a little patience.

Pablo and Marcos played with walkie-talkies as kids. As adults, they discover that the best way to talk privately is still the same: direct, with no intermediaries, with no one in between.

Manuel wants to throw a surprise birthday party for his wife. He needs to talk to Rosa without leaving a trace. A story about privacy, surprises, and why Solo2 isn't in any app store.

Your password opens the door. Your 24 words are the entire house. Losing a key is not the same as losing the building. And that difference matters more than you might think.