Twitter users can now secure their accounts with two-factor authentication without being required to supply a mobile phone number.
The social network said in late May that it was switching its security key-based two-factor authentication from the FIDO U2F standard it had been using for nearly one year to the FIDO2 WebAuthn protocol.
Software engineer Brian Wong said in a blog post at the time that WebAuthn enables strong browser-to-hardware-based authentication via devices including security keys, mobile phones and built-in authenticators such as Touch ID, exchanging user credentials using public key cryptography, and it is supported by most modern browsers, including Chrome, Edge and Firefox.
Twitter said in a Twitter Safety tweet Thursday that it updated its login process to support WebAuthn, so that users can authenticate their logins with a single tap and without a phone number.
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