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Twitter also works with two-factor authentication to protect users' accounts with encryption keys. As the only form of authentication, users can use security keys. All users currently can only log in via their security to Twitter. But a two-factor authentication by a third party will soon be needed. Well, as it makes it live for users, Twitter did not share any details on it.

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Users may also use a security key to sign in to their accounts, but they must first activate 2FA methods, such as SMS code or an authentication app.

Protecting your account on all of your devices is important. We’ve updated two-factor authentication so you can now log in with your physical security key on Android and iOS, like on desktop. More on how to set up this added security for your account: https://t.co/c7hff75zQd

— Twitter Support (@TwitterSupport) December 2, 2020

Secure your account (and that alt) with multiple security keys. Now you can enroll and log in with more than one physical key on both mobile and web.

And coming soon: the option to add and use security keys as your only authentication method, without any other methods turned on.

— Twitter Support (@TwitterSupport) March 15, 2021

It is important to note that the hardware protections are safer than standard authentication processes. These keys can be connected via USB or Bluetooth via physical keys on your PC. No code on the phone is necessary. It makes accessing the user account difficult for hackers.

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"Multiple security keys secure your (and that alt) accounts, Twitter said. More than one physical key on smartphones and the web can be registered and signed in now. And soon: the option of adding and using the security keys, without any other tool, as your only authentication method."