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This step-by-step guide shows you how to turn on two-factor authentication (2FA) on your computer and mobile devices for Signal.

  What is two-factor authentication?

Two-factor authentication (2FA) is a procedure that typically requires a combination of something a user knows (pin, secret question) and something a user has (cards, fingerprint) in order to access a program or operating system.

diagram of two factor showing log in screen plus second factor equals access

Why is it important to turn it on?

Using 2FA to access your favourite programs provides enhanced security to traditional usernames and passwords. The multiple layers of authentication increase confidence that the user requesting access is actually who they claim to be, specifically you.

Where do I turn it on?

Where to turn on 2FA within a program depends on each program. However, the steps are universally simple and somewhat similar. Icons and language may differ slightly depending on the program or device you are using.

Turning on 2FA for Signal on your mobile device

By setting up 2FA for Signal, you'll be asked to enter a special login code or to confirm your login attempts each time you try to access Signal from a computer or mobile device Signal doesn’t recognise. Signal will also send you alerts whenever someone tries to log in to your account.

1. Open the Signal app

How to turn on 2 factor authentication for signal on iphone

2.  Tap your Profile picture in the top left

How to turn on 2 factor authentication for signal on iphone

3. Tap the Privacy tab  

How to turn on 2 factor authentication for signal on iphone

4. Tap the switch for Registration Lock

How to turn on 2 factor authentication for signal on iphone

5.  Tap Turn on

How to turn on 2 factor authentication for signal on iphone

6. Enter your PIN and tap Next. Then confirm your PIN

How to turn on 2 factor authentication for signal on iphone

7. Once enabling Registration Lock you will be returned to this page  

How to turn on 2 factor authentication for signal on iphone

Third party 2FA apps

If you would like to use a third party 2FA app, there are many available. Most are free of charge and effective with Facebook. The recommendation is to do your research and find a solution that’s right for you. Below are some examples of 2FA apps currently available.

Third party 2FA apps