To enable two-factor authentication in Twitter, you first need to verify your phone number andemail address. With that complete, follow these steps:
- Visit your account settings page.
- Select “Require a verification code when I sign in.”
- Click on the link to “add a phone” and follow the prompts.
- You’ll be asked to enter a six-digit code sent to your phone via SMS each time you sign in to twitter.com. (Note: That doesn’t mean every time you access Twitter, but just when it requires you to sign in.)
Via Lifehacker
