Is it that third party authentication in general and OpenID in particular can't be used to login to websites, if I'm on mobile phone?The reason I ask this is because buxfer doesn't seem to allow this: You will not be able to login to the  mobile/iPhone site, Facebook  application or Firebux because your  password is not stored by Buxfer. To  explicitly set a password for your  account, login and click on Settings   PasswordIs it a limitation of the website, or OpenID?
Can't Login via OpenID from Mobile Phone?
openid