The tutorial for today will show you how to use an authentication app for two-factor authentication on Facebook with 2FA features.
This method use 2FA features provide by software and produce a new numeric code every 30-seconds.
The application-based 2FA solutions are available for mobile, wearables, or desktop platforms — and even work offline.
Install the Microsoft authenticator android application.
This application will help with the authentication on Facebook and not only this website.
Open the facebook security settings webpage and choose the 2FA via Authentication App option.
This will generate a QR image for your Microsoft authenticator android application.
To use this QR image, use the icon with tree point (the Customize and control icon in the upper-right) and select Add account, select Other account (Google, Facebook, etc.), and then you will use the photo camera to read this QR image.
In the last step, the Facebook webpage will ask a code and this code is generated by the android application each time when you log into the Facebook account.

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