Twitter will overhaul its user authentication system, Elon Musk said in a tweet on Sunday, just days after taking over one of the world's largest social media networks.

"All approval processes are now being redone," Musk said in a tweet without giving further details. Twitter is considering paying for a blue sign that actively monitors the identity of its account holder, technology magazine Platformer reported on Sunday, citing two people familiar with the matter.

Users will have to sign up for Twitter Blue at $4.99 (around Rs. 400) per month or lose their "accepted" badge if the service continues, according to reports. The CEO of Tesla has not made a final decision and the project may still be cancelled, but according to Platformer, the approval may be part of Twitter Blue.

Separately, The Verge reported on Sunday that Twitter will raise the price of a subscription to Twitter Blue, which also monitors users, from $4.99 per month to $19.99 (around Rs. 1,600) per month, citing information inside they saw. Twitter Blue launched in June last year as the platform's first subscription service, which offers "exclusive access to premium features" with a monthly subscription, including the option to edit tweets.

The tweet editing feature was also made available earlier this month after Musk launched a Twitter poll in April asking his millions of followers if they wanted an edit button. More than 70% said yes.

Musk also called for users who logged in to the Twitter site to be redirected to an analysis page that displays the changing tweets, according to a separate Verge report on Sunday citing users familiar with the matter.