Representational Image: Twitter app Back in December 2020, Twitter brought the ability to have a single physical key as a sole two-factor authentication method for users on iOS and Android. With the latest update, Twitter users can now have multiple physical keys for the same. Users will be able to log in to both the iOS, Android, and web by using multiple physical keys. Also Read - Twitter down: Users facing logout issues, failure to load feed and more The new multiple key two-factor authentication is confirmed to make it to Twitter but there’s no given date for the same. Currently, users can have only a single two-factor security key but have to rely on a secondary authentication method as a backup. These backup methods include using an authenticator app or an SMS-based authentication system. Also Read - Twitter is down in India for some users, company says it's working on a fix