Signal's New Username Feature Fixes Their Biggest Onboarding Problem

Signal announced usernames this week, allowing users to create unique identifiers separate from their phone numbers. Previously, you needed someone's phone number to message them on Signal. Now you can share a username instead. This fixes the biggest friction point in Signal's onboarding and makes it viable for professional use.

The Problem Signal Solved

Signal has been the gold standard for secure messaging. End-to-end encryption by default. Open source. Non-profit. No ads. No tracking. But it had a critical flaw for business use: you had to share your personal phone number with everyone you wanted to communicate with.

This was fine for friends and family. It was not fine for colleagues, clients, vendors, or professional contacts. Giving out your personal number creates privacy risks and blurs boundaries. Many professionals avoided Signal for this reason, sticking with less secure alternatives like Slack or email.

Usernames fix this. You can create a professional username, share that instead of your number, and maintain separation between personal and professional communication. Your phone number stays private. Your Signal account remains functional.

How It Works

Creating a username is straightforward. In Signal settings, you choose a unique identifier. It can be changed later if needed. Your username appears on your profile alongside or instead of your phone number.

When someone wants to message you, they can search for your username rather than needing your phone number. This works for both personal and group conversations. Your phone number remains hidden unless you choose to share it.

The feature is opt-in. If you prefer to use Signal the old way with just your phone number, you can. Usernames are an additional option, not a replacement.

Limitations

There is no public directory of usernames. You cannot browse or search for people you do not already know. This is intentional for privacy reasons, but it means you still need some way to share your username with people who should contact you.

You get one username per account. There is no support for multiple identities or work/personal separation at the account level. If you need completely separate professional and personal identities, you still need separate phone numbers and separate Signal accounts.

You still need a phone number to sign up for Signal. Usernames do not eliminate phone numbers entirely. They just hide them from the people you communicate with.

Who Should Use This

If you are a professional who has avoided Signal because you did not want to share your personal number, usernames are for you. Journalists, activists, consultants, anyone who works with clients or sources can now use Signal without compromising their phone number privacy.

For teams handling sensitive information, Signal with usernames is now a viable Slack alternative. You get better security, better privacy, and no vendor lock-in. The tradeoff is fewer integrations and features compared to Slack.

The Bottom Line

Usernames are the feature Signal needed to compete for professional users. They remove the biggest barrier to adoption while maintaining the privacy and security that make Signal special. If you have been waiting for a reason to switch, this is it.