Twitter has announced that it will no longer allow non-Twitter Blue users to use text messages as a two-factor authentication (2FA) method, after March 20.

Also, users will now not be able to enroll in the text message/SMS method of 2FA unless they are Blue subscribers, the company said in a blog post.

After March 20, non-Blue accounts with text message 2FA still enabled “will have it disabled.”

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Currently, the platform offers three methods of 2FA – text message, authentication app, and security key.

The company further mentioned that it “encourages” non-Blue users to “consider using an authentication app or security key method instead.”

“These methods require you to have physical possession of the authentication method and are a great way to ensure your account is secure,” it added.

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