Safety numbers in Dixl

Every Dixl conversation has its own safety number — a fingerprint of the encryption keys protecting that chat. Verifying it confirms no one is sitting between you and the person you’re talking to.

What a safety number proves

It’s derived from both participants’ public keys. If you both see the same number, the conversation is genuinely end-to-end encrypted and no third party holds the keys. If it differs, something changed — usually a reinstall or a new device.

How to verify (iOS & Android)

1. Open the chat and tap the contact’s name at the top.
2. Tap View safety number.
3. Compare the 60-digit number, or have one of you scan the other’s QR code.
4. If they match, tap Mark as verified.

Why a safety number changes

Dixl shows a notice in the chat when a contact’s number changes. Usual reasons:

• They reinstalled Dixl.
• They switched to a new phone.
• They re-registered their account.

What to do when it changes

1. Don’t panic — it’s almost always a new device or reinstall.
2. Before sending anything sensitive, confirm through another channel that the change was expected.
3. If you can’t reach them and the timing seems off, wait.
4. Once confirmed, re-verify and tap Mark as verified again.

FAQ

Why did my safety number change after a Dixl update? Updates alone don’t change it. A change means the other side reinstalled, re-registered, or moved to a new device.

Does changing my phone reset safety numbers? Yes — a new device generates new keys, so your contacts see a change and may re-verify.

Is it safe to keep chatting after a change? Your messages stay end-to-end encrypted regardless. Verification is an extra check; for sensitive chats, confirm the change was expected first.

Do I have to verify safety numbers? No. Encryption is always on — verification is optional, for when you want absolute certainty.