How to Secure Your Accounts with an Authenticator App
- Difficulty
- Beginner
- Tested on
- iOS 18.4 - iPhone 15 Pro, Android 15 - Pixel 9 Pro
- You will need
- Authenticator app, secondary device for QR scanning, existing account with 2FA support
Step by step
Install your preferred authenticator app
Download a reputable authenticator application from the App Store or Google Play Store. Highly recommended options include 2FAS, Raivo OTP, or Microsoft Authenticator for their reliability and backup features.
Note: Choose an app that supports cloud synchronization if you require access across multiple devices.Enable 2FA in your account settings
Log into the service you wish to secure via a desktop browser. Navigate to Security or Login settings and locate the Two-Factor Authentication (2FA) or Multi-Factor Authentication (MFA) section. Select Authenticator App as your primary verification method.
Scan the provided QR code
A QR code will appear on your computer screen. Open your chosen authenticator app on your mobile device, tap the plus (+) or Add icon, and select Scan QR Code. Align the camera with your screen to register the account automatically.
Note: If the camera fails, select the option to enter the setup key manually, which is provided as an alphanumeric string beneath the QR code.Verify the connection
The app will immediately generate a six-digit code that refreshes every 30 seconds. Input this code into the verification field on your computer screen to confirm the link between your account and the app.
Save your recovery codes
The service will provide a list of one-time recovery codes. Copy these codes and store them in a secure physical location or a password manager. These are your only access path if you lose your mobile device.
Note: Never store these codes in plain text on your desktop or cloud drive.