23 ms·

> Now every service demands your phone number to register That appeared as a defense against people impersonating you, i.e. two factor authentication.

• Timon3 9mo ago
  Weird that those same services don't send a login token to the registered number.
• account42 9mo ago
  If that was the case then TOTP would be available as an alternative but often enough it isn't even though SMS are less secure and more costly to implement.